Vibration damping

• US 5,362,046 A
• Filed: 05/17/1993
• Issued: 11/08/1994
• Est. Priority Date: 05/17/1993
• Status: Expired due to Term

• Current Assignee: Sims Vibration Laboratory Incorporated
• Original Assignee: Steven C Sims Inc.
• Inventors: Sims, Steven C.
• Primary Examiner(s): Millin, Vincent
• Assistant Examiner(s): Chiu, Raleigh W.
• Application Number:
  US08/062,997
• Time in Patent Office: 540 Days
• Field of Search: 273/73 R, 273/73 J, 273/75, 273/81 R, 273/67 R, 16/110 R, 81/20, 81/22, 81/489
• US Class Current: 473/300
• CPC Class Codes: A63B 60/54 with means for damping vibrations

Abstract

Small, effective, lightweight, vibration damping devices for implements which are subject to impact. These devices have a head and a stem and are fabricated from a soft elastomeric material. The stem is capable of oscillating over a 360° span in directions generally normal to the longitudinal axis of the device. The peripheral part of the head can oscillate around its circumference in directions generally paralleling that axis.

Claims

1. The combination of an implement and an accessory which keeps deleterious, impact-generated vibrations from being transmitted to a wielder of the implement, said accessory being fabricated from an elastomer and having a mushroom-like configuration defined by a stem and an integral head, said stem being fixed to said implement and being configured for vibration free of contact with said implement in directions which encompass a 360°

arc and are generally normal to the longitudinal axis of the accessory, and said head being dimensioned and configured for implement-free vibrational bending of its peripheral edge at all loci around the circumference thereof in first and second, opposite directions generally paralleling the longitudinal axis of the accessory.

2. A combination as defined in claim 1 in which the ratio of head width to stem length is in the range of 5:

1 to 1;

1.

3. A combination as defined in claim 1 in which the Shore A hardness of the elastomer from which the damper means is fabricated is in the range of 3 to 20.

4. A combination as defined in claim 1 in which the elastomer from which the damper means is fabricated comprises an amorphous mixture of butyl and chloroprene polymers.

5. A combination as defined in claim 1 in which the implement has a handle and the combination includes fastener means for attaching said damper means to said handle.

6. A combination as defined in claim 5 in which the implement has a handle with an exposed end, there is a cavity in said exposed end of said handle, said damper means is located in said cavity, and there is sufficient clearance between the head of the damper means and the wall of the cavity that the damper means does not touch said wall during impact-effected displacement of said damper means.

7. A combination as defined in claim 1 in which said implement has a handle and the combination includes an adhesive for attaching said damper means to said handle.

8. A combination as defined in claim 1 in which the damper means is so constructed and fabricated as to decrease the rate-of-decay of vibrations set up in the implement by the impact.

9. A combination as defined in claim 1 in which the implement has a component adapted to strike a game object and a handle and the damper means is located at an exposed end of said handle.

10. A combination as defined in claim 9 in which the damper means is located exteriorly of and attached to the handle.

11. A combination as defined in claim 9 in which the damper is installed in said handle.

12. The combination of an implement and an accessory which keeps deleterious, impact-generated vibrations from being transmitted to a wielder of the implement:

said accessory being fabricated from an elastomer and having a mushroom-like configuration defined by a stem and an integral head;

said stem being fixed to said implement and being configured for vibration in directions which encompass a 360°

arc and are generally normal to the longitudinal axis of the accessory;

said head being free of said implement and configured for vibration of its peripheral edge around the circumference thereof in first and second directions generally paralleling the longitudinal axis of the accessory;

said implement having a component adapted to strike a game object and a handle, the accessory being installed in and protruding from an exposed end of said handle;

and said implement comprising a grip which surrounds said handle and a protruding part of the accessory and a cover which cooperates with said grip to envelope the accessory.

13. A combination as defined in claim 12 in which the implement comprises a grip support fixed to the exposed end of the handle inside of and in abutting relationship with that part of the grip protruding beyond the handle.