Anti-theft pusher with incremental distance detection

Patent metadata

Field	Value
Publication number	US-11707141-B2
Application number	US-202217727496-A
Country	US
Kind code	B2
Filing date	Apr 22, 2022
Priority date	Apr 5, 2019
Publication date	Jul 25, 2023
Grant date	Jul 25, 2023

Abstract

A retail merchandise pusher is configured for sliding along a pusher assembly track. The pusher assembly is mountable to a retail merchandise shelf. The pusher includes a housing, a spring drum rotatably mounted within the housing, and a coil spring mounted to the spring drum. The coil spring is coilable and uncoilable upon rotation of the spring drum. A controller is coupled to a sensor arrangement within the housing. The sensor arrangement has a spring drum sensor for detecting rotation of the spring drum. A direction sensor detects a direction of rotation of the spring drum. An incremental distance sensor detects incremental movement of the pusher. The controller is configured to calculate, based on data from the sensor arrangement, a total distance and direction of travel by the pusher, and to generate an alarm when the pusher travels more than a threshold distance within a predetermined period of time.

First claim

What is claimed is:

1. A retail merchandise pusher configured for sliding along a track of a pusher assembly, the pusher assembly mountable to a retail merchandise shelf, the pusher comprising:
a housing;
a spring drum rotatably mounted within the housing;
a coil spring mounted to the spring drum, the coil spring coilable and uncoilable upon rotation of the spring drum; and
a controller coupled to a sensor arrangement carried within the housing, the sensor arrangement comprising:
a spring drum sensor for detecting rotation of the spring drum;
a direction sensor for detecting a direction of rotation of the spring drum; and
an incremental distance sensor for detecting an incremental movement of the pusher;

wherein the controller is configured to calculate, based on data from the sensor arrangement, a total distance and direction of travel by the pusher, and to generate an alarm when the pusher travels more than a threshold distance within a predetermined period of time; and
wherein the incremental distance sensor includes a sensing gear in contact with the spring drum, and a slotted disc mounted to the sensing gear, the incremental distance sensor further comprising a light sensor arrangement configured to produce and detect a beam of light.

2. The retail merchandise pusher of claim 1 , wherein the alarm is at least one of a visual, audible, or RF signal.

3. The retail merchandise pusher of claim 2 , wherein the controller is coupled to an output device disposed in the housing, the output device configured to produce the alarm as a visual or audible signal.

4. The retail merchandise pusher of claim 1 , wherein the controller is coupled to a transmitter disposed in the housing, the transmitter configured to wirelessly transmit data to a remote receiver, the data including at least one of an alarm status, and the total distance and direction of travel by the pusher.

5. The retail merchandise pusher of claim 4 , wherein the controller is configured to transmit information, based on data from the sensor arrangement, wherein the information includes an inventory status for the pusher assembly.

6. The retail merchandise pusher of claim 1 , wherein the controller comprises a microprocessor.

7. The retail merchandise pusher of claim 1 , wherein the direction sensor includes a first electrical contact, a common electrical contact, and a second electrical contact, the common electrical contact interposed between the first electrical contact and the second electrical contact.

8. The retail merchandise pusher of claim 7 , wherein a distal end of common electrical contact is intermittently in contact with gear teeth formed on an outer periphery of the spring drum such that the common electrical contact is biased by the gear teeth into contact with the first electrical contact when the spring drum rotates in a first direction, and biased by the gear teeth into contact with the second electrical contact when the spring drum rotates in a second rotational direction opposite the first rotational direction.

9. The retail merchandise pusher of claim 1 , wherein a peripheral region of the slotted disc is movable through a sensing region through which the beam of light extends, wherein the peripheral region includes a plurality of slots formed therein, wherein the plurality of slots sequentially pass through the sensing region as the sensing gear rotates such that the beam of light alternately passes through and is blocked by the plurality of slots.

10. The retail merchandise pusher of claim 9 , wherein the light sensor arrangement includes a light emitter located on a first side of the slotted disc, and a light sensor located on a second side of the slotted disc opposite the first side, the light sensor arranged to detect the beam of light emitted by the light emitter.

11. The retail merchandise pusher of claim 10 , wherein the light emitter is arranged to emit the beam of light such that it is perpendicular to a plane of rotation defined by the slotted disc.

12. The retail merchandise pusher of claim 1 , wherein the coil spring is configured to bias the housing toward one end of the track.

13. The retail merchandise pusher of claim 1 , wherein the pusher is configured to permit a user to set or adjust at least one of the threshold distance and the predetermined period of time.

14. The retail merchandise pusher of claim 1 , wherein the pusher includes a reset control to set a zero position for the controller, the zero position indicating that no merchandise is contained in the pusher assembly such that the pusher is at an end of the track.

15. A pusher assembly configured for mounting to a retail shelf, the shelf having a front and a back, wherein retail merchandise situated near the front of the shelf is removable from the pusher assembly, the pusher assembly comprising:
a track;
a pusher mounted to the track, the pusher slidable toward and away from the front of the shelf, the pusher comprising a controller coupled to a sensor arrangement for detecting movement and a direction of travel by the pusher, the controller configured to calculate, based on data from the sensor arrangement, a total distance traveled by the pusher along the track, the controller further configured to generate an alarm when the pusher travels more than a threshold distance within a predetermined period of time;
wherein the sensor arrangement includes a spring drum sensor, a direction sensor, and an incremental distance sensor; and
wherein the incremental distance sensor includes a sensing gear in contact with the spring drum the gear including a slotted disc mounted to the gear, the incremental distance sensor further comprising a light sensor arrangement configured to produce and detect a beam of light.

16. The pusher assembly of claim 15 , wherein the direction sensor includes a first electrical contact, a common electrical contact, and a second electrical contact, the common electrical contact interposed between the first electrical contact and the second electrical contact.

17. The pusher assembly of claim 15 , wherein the alarm is at least one of a visual, audible, or RF signal, and the controller is coupled to a transmitter configured to wirelessly transmit data to a remote receiver, the data including at least one of an alarm status, and the total distance and direction of travel by the pusher.

18. The pusher assembly of claim 15 , wherein the pusher is configured to permit a user to set or adjust at least one of the threshold distance and the predetermined period of time, and includes a reset control to set a zero position for the controller, the zero position indicating that no merchandise is contained in the pusher assembly such that the pusher is at an end of the track.

19. The pusher assembly of claim 15 , wherein the controller is configured to provide, based on data from the sensor arrangement, an inventory status of the pusher assembly.

20. A retail merchandise display system for self-facing retail merchandise, the retail merchandise display comprising:
a shelf;
at least one pusher assembly mounted to the shelf, the at least one pusher assembly comprising:
a track;
a pusher slidable along the track, the pusher assembly comprising a controller coupled to a sensor arrangement that includes a spring drum sensor, a direction sensor, and an incremental distance sensor, the incremental distance sensor includes a sensing gear in contact with the spring drum the gear including a slotted disc mounted to the gear, the incremental distance sensor furthe

Assignees

• Fasteners For Retail Inc

Inventors

• Ewing Brent O
• Man Chan Chor

Classifications

• A47F11/00

  Arrangements in shop windows, {shop floors} or show cases · CPC title

• A47F1/125

  with an article-pushing device · CPC title

• G07F9/02

  Devices for alarm or indication, e.g. when empty; Advertising arrangements in coin-freed apparatus (alarms or warning devices indicating the interruption of flow to be metered G07F15/10) · CPC title

• G07F11/42

  the articles being delivered by motor-driven means · CPC title

• G07F11/22 Primary

  Pushers actuated indirectly by hand, e.g. through cranks or levers · CPC title