Sports scoring device including a flexible prezoelectric layer resilient layer

• US 4,761,005 A
• Filed: 10/10/1985
• Issued: 08/02/1988
• Est. Priority Date: 10/10/1985
• Status: Expired due to Fees

• Current Assignee: French Barry J Bay Village
• Original Assignee: Barry J. French
• Inventors: Fung, Clifford D., French, Barry J.
• Primary Examiner(s): Grieb, William H.
• Assistant Examiner(s): Lastova, MaryAnn Stoll
• Application Number:
  US06/785,969
• Time in Patent Office: 1,027 Days
• Field of Search: 273/1 GE, 273/183 R, 273/183 A, 273/184 R, 273/186 A, 273/181 G, 273/181 J, 273/181 K, 273/1 GC, 273/1 ES, 273/1 F, 272/76, 272/77, 310/310, 310/318, 310/319, 310/800, 310/311, 73/862.59
• US Class Current: 273/454
• CPC Class Codes: A63B 2024/0037 on a target surface or at impact on the ground
• CPC Class Codes: A63B 2220/30 Speed
• CPC Class Codes: A63B 2220/53 Force of an impact, e.g. blow or punch
• CPC Class Codes: A63B 2220/801 Contact switches
• CPC Class Codes: A63B 2220/89 Field sensors, e.g. radar systems
• CPC Class Codes: A63B 24/0021 Tracking a path or terminating locations
• CPC Class Codes: G01L 1/16 using properties of piezoelectric devices
• CPC Class Codes: G01L 5/0052 measuring forces due to impact G01L5/0061, G01L5/14 take precedence; impact testing of structures G01M7/08; impact testing of material G01N3/00
• CPC Class Codes: G01P 15/09 by piezoelectric pick-up
• CPC Class Codes: G01P 7/00 Measuring speed by integrating acceleration measuring travelled distance by double integration of acceleration G01C21/16
• CPC Class Codes: Y10S 310/80 Piezoelectric polymers, e.g. PVDF

Abstract

Disclosed is a device for generating an analog output signal indicative of an impact to a transducer. The transducer may be mounted on protective equipment utilized in various martial arts fields, such as protective vests and the like or can be mounted on training equipment, such as a heavy bag, striking pad, etc. In a preferred embodiment the transducer is a piezoelectrical signal which is indicative of the amount of deformation. By placing the piezoelectric film on top of a deformable material, in a preferred embodiment sandwiching it in the deformable material, impacts to the deformable material will strain the piezoelectric film generating the signal output. In a further embodiment of the present invention, the piezoelectric transducer is mounted on a target pad and provides an analog output indicative of the characteristics of an object impacting the target pad. For use in the martial arts, the transducer may be connected to a transmitter and remote receiver for providing an indication of the impact at a remote location.

Claims

1. A scoring apparatus for indicating at least one characteristics of an externally applied impact by a sports participant to a deformable object, wherein said characteristic is at least one of velocity, force or energy of said impact, said apparatus comprising

flexible transducer means, responsive to said impact, for providing an analog output, said transducer means comprises a piezoelectric film layer comprises of a piezoelectric material, wherein said transducer means is attached to a first resilient layer of material, wherein said resilient layer is above or below said piezoelectric film layer such that said impact deforms only a portion of said film layer and only a portion of said first resilient layer;

means, responsive to said analog output, for indicating said one characteristic of said impact, wherein said flexible transducer means of said apparatus comprises an active means for generating an electrical output in response to said impact.

2. An apparatus as defined in claim 1, wherein said deformable object is a garment.

3. The apparatus as defined in claim 1, wherein said deformable object is a glove.

4. The apparatus as defined in claim 1, wherein said deformable object is a vest.

5. The apparatus as defined in claim 1, wherein said deformable object is a hitting pad.

6. The apparatus as defined in claim 1, wherein said deformable object is a punching bag.

7. The apparatus as defined in claim 1, wherein said deformable object is a football blocking dummy.

8. The apparatus as defined in claim 1, wherein said piezoelectric film layer comprises a plurality of physically separated, electrically connected piezoelectric members.

9. The apparatus as defined in claim 1, wherein said deformable object further includes at least a second layer of resilient material with said piezoelectric material sandwiched between said first and said second resilient layers.

10. The apparatus as defined in claim 1, wherein said analog output has an initial rate of increase and said indicating means includes means, responsive to said initial rate of increase, for signifying velocity of said impact.

11. The apparatus as defined in claim 1, wherein said analog output comprises an initial rate of increase, a peak amplitude or a duration.

12. The apparatus as defined in claim 1, wherein said deformable object includes a curved surface, said first resilient layer is curved, and said second film layer is contoured to the curved shape of said first resilient layer.

13. The apparatus as defined in claim 1, wherein said indicating means indicates the force of said impact.