阅读说明：本技术 不可再激活声磁防盗标签、版标、卷标及永久去激活方法 (Non-reactivatable acoustic magnetic anti-theft label, version label, volume label and permanent deactivation method ) 是由 刘曹飞 杨梅 于 2021-08-12 设计创作，主要内容包括：本发明公开了一种不可再激活的声磁防盗标签、版标、卷标及永久去激活方法,不可再激活的声磁防盗标签包括标签壳、至少一片共振片、磁性偏置片及至少两个未充磁且可磁化的防激活件；所述标签壳内具有空腔,各所述共振片设于所述空腔内；所述磁性偏置片设于所述空腔内或所述标签壳的外侧上,并与所述共振片呈层状排列；各所述防激活件设于所述空腔内或所述标签壳的外侧上。本发明提供的不可再激活声磁防盗标签、版标、卷标及永久去激活方法,至少两个防激活件能够全方位、多角度保障声磁防盗标签不会受到外界磁场的影响,在声磁防盗标签去激活后不会被再次激活,从而有效避免了商场的声磁防盗系统因声磁防盗标签的二次激活而产生的误报警现象。(The invention discloses a nonreactivable acoustic-magnetic anti-theft label, a plate label, a volume label and a permanent deactivation method, wherein the nonreactivable acoustic-magnetic anti-theft label comprises a label shell, at least one resonance sheet, a magnetic bias sheet and at least two non-magnetized and magnetizable anti-activation pieces; the label shell is internally provided with a cavity, and each resonance sheet is arranged in the cavity; the magnetic biasing sheet is arranged in the cavity or on the outer side of the label shell and is arranged in a layered manner with the resonance sheet; each of the activation prevention members is disposed within the cavity or on an exterior side of the label housing. According to the non-reactivatable acoustic-magnetic anti-theft label, the version label, the volume label and the permanent deactivation method, the at least two activation preventing parts can ensure that the acoustic-magnetic anti-theft label is not influenced by an external magnetic field in an all-around and multi-angle manner, and the acoustic-magnetic anti-theft label cannot be activated again after being deactivated, so that the false alarm phenomenon of an acoustic-magnetic anti-theft system in a shopping mall due to secondary activation of the acoustic-magnetic anti-theft label is effectively avoided.)

1. A non-reactivatable acousto-magnetic security tag, comprising: the tag comprises a tag shell, at least one resonance sheet, a magnetic biasing sheet and at least two non-magnetized and magnetizable anti-activation pieces;

the label shell is internally provided with a cavity, and each resonance sheet is arranged in the cavity; the magnetic biasing sheet is arranged in the cavity or on the outer side of the label shell and is arranged in a layered manner with the resonance sheet; each of the activation prevention members is disposed within the cavity or on an exterior side of the label housing.

2. The non-reactivatable acousto-magnetic anti-theft tag according to claim 1, wherein the width of the resonance sheet is between 1.6mm and 5.3 mm.

3. The non-reactivatable acousto-magnetic anti-theft tag according to claim 1 or 2, wherein the tag housing comprises a box body and a box cover; the box body is internally provided with the cavity, one surface of the box body is provided with an opening communicated with the cavity, and the box cover is arranged on the one surface of the box body and covers the opening.

4. The non-reactivatable acousto-magnetic anti-theft tag according to claim 3 wherein the width of at least one location of the exterior of the case is 3.5mm to 6.5mm, where the width of the corresponding lid is 4.0mm to 7.9 mm.

5. The non-reactivatable acousto-magnetic anti-theft tag according to claim 1, wherein the anti-activation member is a semi-hard magnetic or permanent magnetic material and the anti-activation member is in the form of a sheet, rod, wire or powder.

6. The non-reactivatable acousto-magnetic anti-theft tag according to claim 1, wherein each of said anti-activation members is arranged sequentially above a top surface of said magnetic biasing piece along a length direction of said magnetic biasing piece.

7. The non-reactivatable acousto-magnetic anti-theft tag according to claim 1, wherein each of said anti-activation members is arranged in a layer above a top surface of said magnetic biasing sheet.

8. The non-reactivatable acousto-magnetic anti-theft tag according to claim 1, wherein the width of the resonance sheet ranges from 3mm to 7 mm.

9. The non-reactivatable acousto-magnetic anti-theft tag of claim 5,

the width of each resonance sheet is 6.5-7.0 mm, and the number of the resonance sheets is one;

or the width of the resonance sheet is 6.0-6.9mm, and the number of the resonance sheets is two;

or the width of the resonance sheet is 4.6-6.5 mm, and the number of the resonance sheets is three;

or, the width of the resonance sheet is 3.1-4.9 mm, and the number of the resonance sheets is four.

10. A logo made of the non-reactivatable acoustic magnetic anti-theft label according to any one of claims 1 to 9, wherein a plurality of the non-reactivatable acoustic magnetic anti-theft labels are closely arranged on the same plane to form the logo.

11. A label made of the non-reactivatable acoustic magnetic anti-theft label according to any one of claims 1 to 9, wherein a plurality of the non-reactivatable acoustic magnetic anti-theft labels are parallel to each other and perpendicular to the length direction of the supporting base tape to form the label.

12. The tag of claim 11, wherein the number of non-reactivatable acousto-magnetic anti-theft tags on each tag is 1000-12000.

13. A method for permanently deactivating a non-reactivatable acousto-magnetic anti-theft tag, characterized in that the non-reactivatable acousto-magnetic anti-theft tag according to any one of claims 1 to 9 is placed in a predetermined magnetic field to permanently deactivate the non-reactivatable acousto-magnetic anti-theft tag.

14. The method for permanently deactivating a non-reactivatable acousto-magnetic anti-theft tag according to claim 13 wherein said predetermined magnetic field is an ac magnetic field with a peak value greater than 100Oe and a frequency of 50-2000 Hz.

15. The method for permanently deactivating a non-reactivatable acousto-magnetic anti-theft tag according to claim 13 wherein the preset magnetic field is a dc magnetic field generated by a magnet or coil having a surface field greater than 500 Oe.

16. The method for the permanent deactivation of a non-reactivatable acousto-magnetic anti-theft tag according to any one of claims 14 or 15, wherein the placing time of said non-reactivatable acousto-magnetic anti-theft tag in said preset magnetic field is 0.1-60 s.

Technical Field

The invention relates to the technical field of commercial burglary prevention, in particular to a non-reactivatable acoustic-magnetic anti-theft label, a plate label, a volume label and a permanent deactivation method.

Background

The anti-theft label adopts Electronic Article Surveillance (EAS) technology, and the detection system placed at the entrance or the cashier passageway of a supermarket in a market identifies and detects the anti-theft soft label stuck on the article or the anti-theft hard label nailed on the clothing, shoes and hats, and when the label which is not processed by a cashier (the soft label is not demagnetized or the hard label is not taken down) passes through the system, the system can send out an alarm to remind the staff to pay attention.

In practical application, in order to improve the anti-theft effect, part of the acoustic-magnetic anti-theft tags are permanently implanted into valuable commodities (source tags), the commodities deactivate the built-in tags when being sold, the deactivated tags usually remain in the commodities and cannot be taken out, but the commodities can inadvertently touch various magnetic fields in the normal use process of customers, and the demagnetized bias pieces in the deactivated tags can be magnetized again, so that the deactivated acoustic-magnetic tags are activated again, when the customers with the sold commodities move into other various markets, the acoustic-magnetic anti-theft systems widely installed in the markets can be triggered, embarrassed false alarms are caused, legal disputes are caused, the shopping experience of the customers is not facilitated, and the legal liability of the sales of the merchants is increased.

Disclosure of Invention

The invention provides a non-reactivatable acoustic-magnetic anti-theft label, a version label, a volume label and a permanent deactivation method, which can not be activated again after deactivation, thereby effectively avoiding false alarm generated by the acoustic-magnetic anti-theft system of a market due to secondary activation of the acoustic-magnetic anti-theft label.

In order to solve the above technical problem, an embodiment of the present invention provides a non-reactivatable acoustic-magnetic anti-theft tag, including: the tag comprises a tag shell, at least one resonance sheet, a magnetic biasing sheet and at least two non-magnetized and magnetizable anti-activation pieces;

the label shell is internally provided with a cavity, and each resonance sheet is arranged in the cavity; the magnetic biasing sheet is arranged in the cavity or on the outer side of the label shell and is arranged in a layered manner with the resonance sheet; each of the activation prevention members is disposed within the cavity or on an exterior side of the label housing.

Preferably, the width of the resonance piece is 1.6mm to 5.3 mm.

As one of the preferable schemes, the label shell comprises a box body and a box cover; the box body is internally provided with the cavity, one surface of the box body is provided with an opening communicated with the cavity, and the box cover is arranged on the one surface of the box body and covers the opening.

As one preferable scheme, the width of at least one part of the outer part of the box body is 3.5 mm-6.5 mm, and the width of the corresponding box cover at the part is 4.0 mm-7.9 mm.

Preferably, the activation preventing member is made of semi-hard magnetic or permanent magnetic material, and the activation preventing member is in the shape of a sheet, a rod, a wire or a powder.

Preferably, each of the activation preventing members is arranged above the top surface of the magnetic biasing piece in sequence along the length direction of the magnetic biasing piece.

Preferably, each of the activation preventing members is arranged in a layer above the top surface of the magnetic biasing sheet.

Preferably, the width of the resonance piece ranges from 3mm to 7 mm.

As one of the preferable embodiments, there is provided,

the width of each resonance sheet is 6.5-7.0 mm, and the number of the resonance sheets is one;

or the width of the resonance sheet is 6.0-6.9mm, and the number of the resonance sheets is two;

or the width of the resonance sheet is 4.6-6.5 mm, and the number of the resonance sheets is three;

or, the width of the resonance sheet is 3.1-4.9 mm, and the number of the resonance sheets is four.

Another embodiment of the present invention provides a logo made of the above-mentioned non-reactivatable acoustic-magnetic anti-theft tag, wherein a plurality of the non-reactivatable acoustic-magnetic anti-theft tags are closely arranged on the same plane to form the logo.

According to another embodiment of the invention, the volume label is made of the nonreactivable acoustic-magnetic anti-theft label, and a plurality of the nonreactivable acoustic-magnetic anti-theft labels are parallel to each other and perpendicular to the length direction of the supporting base tape to form the volume label.

As one preferable scheme, the number of the nonreactivable acoustic magnetic anti-theft tags on each volume label is 1000-12000.

In another embodiment of the present invention, a method for permanently deactivating a non-reactivatable acoustic-magnetic anti-theft tag is provided, where the non-reactivatable acoustic-magnetic anti-theft tag is placed in a preset magnetic field, so as to permanently deactivate the non-reactivatable acoustic-magnetic anti-theft tag.

As one preferable scheme, the preset magnetic field is an alternating current magnetic field with the peak value larger than 100Oe and the frequency of 50-2000 Hz.

Preferably, the predetermined magnetic field is a dc magnetic field generated by a magnet or a coil having a surface field greater than 500 Oe.

As one preferable scheme, the placement time of the nonreactivable acoustic-magnetic anti-theft tag in the preset magnetic field is 0.1-60 s.

Compared with the prior art, the embodiment of the invention has the advantages that at least one point is as follows: when the non-reactivatable acoustic-magnetic anti-theft label is deactivated, the non-reactivatable acoustic-magnetic anti-theft label is not reactivated by an external magnetic field under the action of the activating prevention piece, so that false alarm caused by secondary activation of the acoustic-magnetic anti-theft label of a mall is effectively avoided; in addition, at least two activation preventing parts can ensure that the acoustic-magnetic anti-theft label is not influenced by an external magnetic field in an all-round and multi-angle manner, and the stable working performance of the acoustic-magnetic anti-theft label is jointly realized through the interaction of the activation preventing parts and the magnetic biasing piece and the resonance piece, so that the potential serious legal dispute caused by false alarm in a market again due to the fact that the deactivated acoustic-magnetic anti-theft label is activated again carelessly is greatly reduced or eradicated.

Drawings

FIG. 1 is an exploded schematic view of a non-reactivatable acousto-magnetic anti-theft tag in one embodiment of the invention;

FIG. 2 is an exploded schematic view of a non-reactivatable acousto-magnetic anti-theft tag in another embodiment of the invention;

wherein, 1, label shell; 2. a resonance plate; 3. a magnetic biasing sheet; 41. an activation prevention member; 42. an activation prevention member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present application, the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first," "second," "third," etc. may explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description of the present application, it is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, as those skilled in the art will recognize the specific meaning of the terms used in the present application in a particular context.

An embodiment of the present invention provides a non-reactivatable acoustic-magnetic anti-theft tag, and specifically, referring to fig. 1, fig. 1 shows an exploded schematic diagram of a non-reactivatable acoustic-magnetic anti-theft tag according to an embodiment of the present invention, where the non-reactivatable acoustic-magnetic anti-theft tag includes: a tag housing 1, at least one resonator plate 2, a magnetic biasing plate 3, and at least two non-magnetized and magnetizable deactivation elements (41 and 42 shown in the figure);

in the embodiment of the present invention, the label shell 1 is in a sealed state during the working process, and has cavities, the number and size of the cavities are determined by the actual label type and design requirements (the number of the cavities in this embodiment is 1), which is not described herein again, and each resonance sheet 2 is disposed in the cavity.

For the magnetic bias sheet 3, which is magnetized to generate a normal operating field strength (e.g. about 4 to 7Oe) so that the resonant frequency (e.g. 57.5kHz to 58.5kHz) of the acoustic-magnetic anti-theft tag can be detected by the detector, preferably, the magnetic bias sheet 3 is disposed in the cavity or on the outer side of the tag shell 1 and is arranged in a layer with the resonance sheet 2, thereby ensuring the resonance effect of the resonance sheet 2.

When the magnetic bias piece 3 in the present tag is demagnetized (demagnetized), the resonant frequency of the acoustic-magnetic anti-theft tag rises (for example, rises to a detection window greater than 59.5kHz and greater than 57.5kHz to 58.5kHz), so that the detector cannot detect the deactivated acoustic-magnetic anti-theft tag, but in the prior art, when the acoustic-magnetic anti-theft tag is close to a natural or unnatural magnet (for example, close to a magnet with a surface field greater than 500 Oe), the acoustic-magnetic anti-theft tag returns to the resonant frequency which can be detected by the detector when activated, and then is detected by the detector. The acoustic magnetic anti-theft label in the embodiment of the invention is provided with an un-magnetized activation preventing part which is arranged in the cavity or on the outer side of the label shell 1, after the label is used, the bias part is demagnetized, so that the alarm cannot be triggered, even if the label is inadvertently close to a magnet with a surface field larger than 500Oe later, the activation preventing part is magnetized, the magnetic field of the magnetized bias part is far higher than the magnetic field strength 4-7Oe required by a normal superposition point, the label cannot return to the resonance frequency which can be detected by the detector when the label is activated, preferably, the resonance frequency of the acoustic magnetic anti-theft label is 57.0kHz at the lowest and is lower than a detection window of 57.5 kHz-58.5 kHz, so that the label cannot be detected by the detector and cannot be activated again.

Further, in the above embodiment, the width of the resonator plate 2 is 1.6mm to 5.3 mm. The width of the resonance plate of the existing acoustic-magnetic anti-theft tag is generally 6mm, and 1 (such as LE or AP of the american society of first telecommunication, and NST1T of the national society of high electronics), 2 (such as DR or APX of the american society of first telecommunication), and 3 (such as NST3T of the national society of high electronics) are provided. However, the inventors have found that the alarm distance of a plurality of plates decreases more slowly when the resonance plate is narrowed than when the resonance plate is single-plate. For example, when the widths of the resonance plates are substantially the same, the width of the resonance plate is reduced, and the alarm distance of the anti-theft tag is about 95% of the original average alarm distance. The alarm distance of the single-chip resonance piece is reduced by more than 40% due to the same width change, and the difference is probably caused by the fact that the effective width is slightly larger than the width of the single-chip when a plurality of resonance pieces are not arranged in a uniform way, and the interaction of the resonance pieces is more complicated than the resonance characteristic of the single-chip. Considering the amorphous price (amorphous means that the resonance piece is made of amorphous alloy based on FeNiMoB or amorphous alloy based on FeNiCoSiB), the bias piece, double faced adhesive tape and other raw materials comprehensively, the embodiment of the invention designs the width of the resonance piece to be 1.6-5.3 mm, reduces the width of the acousto-magnetic label, and can be used for protecting narrow products or products needing delicate shapes, such as products based on 3-5 resonance pieces (such as the narrow-label NTL of Ningbo Signal electronic technology Limited) and a reactivation-preventing piece.

For the label case 1 in the embodiment of the present invention, it is preferable that the label case includes a case body and a case cover (the case cover is located on the top side of the case body in the figure); the box body is internally provided with the cavity, one surface of the box body is provided with an opening communicated with the cavity, and the box cover is arranged on the one surface of the box body and covers the opening. Of course, in this embodiment, except for the rectangle, the shapes of the box body and the box cover need to be combined with specific models and product design requirements, and are not described herein again.

Further, in the above embodiment, at least one position of the outer part of the box body has a width of 3.5mm to 6.5mm, and the width of the corresponding box cover is 4.0mm to 7.9 mm.

In order to adapt to different types of acoustic-magnetic anti-theft tags, in the embodiment of the present invention, the material of the activation preventing member is a semi-hard magnetic material or a permanent magnetic material, and the activation preventing member may be a sheet (e.g., Fe — Mn semi-hard magnetic metal sheet), a film (e.g., ferrite permanent magnetic film of plastic matrix), a rod, a wire, or a powder; for example, the activation prevention member is a semi-hard magnetic material and is rod-shaped (cold-drawn semi-hard magnetic high carbon steel rod), or the activation prevention member is a semi-hard magnetic material and is filament-shaped (semi-hard magnetic FeCrCo wire after cold-drawing and heating treatment), or the activation prevention member is powder-shaped (ferrite or rapidly quenched NdFeB permanent magnetic powder). The selection of polymorphic anti-activation piece not only can adapt to the cavity of different shapes, also can provide better selection for matching different anti-activation piece materials, as long as set up near magnetic biasing piece.

Regarding the structural design of the activation preventing members, in the present embodiment, preferably, as shown in fig. 1, each of the activation preventing members (i.e. fingers 41 and 42) is sequentially arranged above the top surface of the magnetic bias sheet 3 along the length direction of the magnetic bias sheet 3, i.e. each of the activation preventing members (i.e. fingers 41 and 42) is located on the same plane, is located on the top surface of the magnetic bias sheet 3, and can be connected to the top surface of the magnetic bias sheet 3 through an intermediate medium such as a double-sided adhesive tape.

Preferably, when the number of the activation preventing members is plural, the plural activation preventing members are provided above the top surface of the magnetic biasing piece at equal intervals.

Specifically, referring to fig. 2, fig. 2 shows an explosion schematic diagram of a non-reactivatable acoustic-magnetic anti-theft tag according to another embodiment of the present invention, different from the structural design of the activation prevention member in fig. 1, each of the activation prevention members (i.e., fingers 41 and 42) in the embodiment of the present invention may also be arranged above the top surface of the magnetic bias sheet 3 in a layered manner, where each of the activation prevention members (i.e., fingers 41 and 42) may also be connected to each other through an intermediate medium such as a double-sided adhesive tape.

Regarding the width of the resonance piece 2, the width has a certain influence on the alarm distance of the anti-theft tag, in this embodiment, in order to match different models of acoustic-magnetic anti-theft tags, the width of the resonance piece 2 ranges from 3mm to 7mm, thereby realizing better resonance characteristics.

Specifically, regarding the design of the dimensions, the present invention provides four embodiments, in the first embodiment, the width of the resonator plate 2 is 7mm, and the number of the resonator plates 2 is one; in the second embodiment, the width of the resonance plate 2 is 6.8mm, and the number of the resonance plates 2 is two; in the third embodiment, the width of the resonance plate 2 is 5mm, and the number of the resonance plates 2 is three; in the fourth embodiment, the width of the resonance plate 2 is 4mm, and the number of the resonance plates 2 is four.

Another embodiment of the present invention provides a logo made of the above-mentioned non-reactivatable acoustic-magnetic anti-theft tag, wherein a plurality of the non-reactivatable acoustic-magnetic anti-theft tags are closely arranged on the same plane to form the logo.

According to another embodiment of the invention, the volume label is made of the nonreactivable acoustic-magnetic anti-theft label, and a plurality of the nonreactivable acoustic-magnetic anti-theft labels are parallel to each other and perpendicular to the length direction of the supporting base tape to form the volume label.

As one preferable scheme, the number of the nonreactivable acoustic magnetic anti-theft tags on each volume label is 1000-12000.

Another embodiment of the present invention provides a method for permanently deactivating a non-reactivatable acoustic-magnetic anti-theft tag, which is applied to the non-reactivatable acoustic-magnetic anti-theft tag. In order to realize the permanent deactivation processing of the acoustic-magnetic anti-theft tag and further ensure that the acoustic-magnetic anti-theft tag cannot be reactivated after being deactivated, the invention realizes the effect of permanent deactivation by putting the non-reactivatable acoustic-magnetic anti-theft tag into a preset magnetic field for processing.

In order to achieve the permanent deactivation effect of the acoustic-magnetic anti-theft tag, parameters of a preset magnetic field in the invention need to be limited according to actual product design requirements, wherein the permanent deactivation effect can be achieved through a direct-current magnetic field or an alternating-current magnetic field, and specifically, for the preset magnetic field, the invention provides the following two embodiments:

putting the nonreactivable acoustic-magnetic anti-theft tag into an alternating-current magnetic field with the frequency of 50-2000Hz and the peak value of more than 100Oe for 0.1-60 seconds, and permanently deactivating the acoustic-magnetic anti-theft tag;

the activated acoustic-magnetic anti-theft label is placed in a direct-current magnetic field generated by a magnet or a coil with the surface field larger than 500Oe, and the activation preventing part is magnetized for 0.1-60 seconds, so that the permanent deactivation effect is realized, and the acoustic-magnetic anti-theft label is prevented from being activated again.

The permanently deactivated method provided by the above embodiment is used to process the acoustic-magnetic anti-theft tag, so that the acoustic-magnetic anti-theft tag does not return to the resonance frequency that can be detected by the detector when activated permanently, and preferably, the resonance frequency of the acoustic-magnetic anti-theft tag after being permanently deactivated is at most 57.0kHz and is lower than the detection window of 57.5kHz to 58.5kHz, so that the acoustic-magnetic anti-theft tag cannot be detected by the detector and cannot be activated again.

The non-reactivatable acoustic-magnetic anti-theft label, the version label, the volume label and the permanent deactivation method provided by the embodiment of the invention have the beneficial effects that at least one point is as follows:

when the non-reactivatable acoustic-magnetic anti-theft label is deactivated, the non-reactivatable acoustic-magnetic anti-theft label is not reactivated by an external magnetic field under the action of the activating prevention piece, so that false alarm caused by secondary activation of the acoustic-magnetic anti-theft label of a mall is effectively avoided; in addition, at least two anti-activation pieces can guarantee that the acoustic-magnetic anti-theft tag is not influenced by an external magnetic field in an all-round and multi-angle mode, the stable working performance of the acoustic-magnetic anti-theft tag is achieved through interaction of the acoustic-magnetic anti-theft tag and the magnetic biasing piece and the resonance piece, and potential serious legal disputes caused by false alarm in a market again due to the fact that the demagnetized acoustic-magnetic anti-theft tag is activated again carelessly are greatly reduced or eradicated.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.