Swing force indicator for a playing piece of sports equipment

• US 4,684,133 A
• Filed: 10/20/1986
• Issued: 08/04/1987
• Est. Priority Date: 10/20/1986
• Status: Expired due to Term

• Current Assignee: Maroth Associates Incorporated
• Original Assignee: Sybil Maroth
• Inventors: Maroth, Sybil
• Primary Examiner(s): Marlo, George J.
• Application Number:
  US06/920,748
• Time in Patent Office: 288 Days
• Field of Search: 273/186 A, 273/26 B, 273/29 A, 273/186 R, 273/194 R
• US Class Current: 473/233
• CPC Class Codes: A63B 15/005 with a weight movable along the longitudinal axis of the club due to centrifugal forces
• CPC Class Codes: A63B 2220/51 Force
• CPC Class Codes: A63B 60/04 Movable ballast means A63B15/005 takes precedence
• CPC Class Codes: A63B 69/3632 Clubs or attachments on clubs, e.g. for measuring, aligning A63B69/3614 takes precedence; clubs for swinging exercises in general A63B15/00

Abstract

A swing-force indicator for a playing piece of sports equipment intended to be swung in the playing of a game, including an elongate housing, an elongate shaft, and bearings disposed adjacent opposite ends of the housing for mounting the shaft for lengthwise turning movement therein. A manually engageable finger piece is rigid on one end of the shaft, and a weight member having an indicator is slidable along the shaft. A compression spring on the shaft engages the weight member to bias it toward one end of the shaft, to a starting position. The weight member has a pawl and the shaft has teeth cooperable with the pawl to hold the weight member in various adjusted positions remote from the starting position against the action of the compression spring. The shaft has a smooth track on which the pawl can alternately ride when the shaft is turned by the finger piece, thereby to enable return of the weight member to a starting position under the action of the compression spring. There is provided a resilient detent finger in the housing for yieldably holding the shaft in position for engagement of the teeth thereof by the pawl. The elongate shaft can be assembled to the elongate housing by a simple, purely lateral or transaxial movement involving the bearing structures at the opposite ends of the shaft.

Claims

1. A swing-force indicator for a playing piece of sports equipment intended to be swung in the playing of a game, comprising, in combination:

(a) an elongate housing,

(b) an elongate shaft, and bearings disposed adjacent opposite ends of said housing for mounting the shaft for lengthwise turning movement in the housing,

(c) a manually engageable finger piece rigid on one end of the shaft,

(d) a weight member having an indicator, slidable along the shaft,

(e) a compression spring on the shaft, engaging the weight member to bias it toward one end of the shaft, to a starting position,

(f) said weight member having a pawl device and said shaft having a one-way track which the pawl device can traverse and with which it is cooperable to hold the weight member in various adjusted positions remote from the starting position as attained in response to centrifugal force acting against the action of the compression spring,

(g) said shaft having a relieved track portion over which the pawl device can alternately freely ride when the shaft is turned by the finger piece, thereby to enable return of the weight member to a starting position under the action of the compression spring, and

(h) a resilient detent finger in said housing,

(i) said shaft and detent finger having cooperable means for yieldably holding the shaft in a position for engagement of the track thereof by the pawl device of the weight member.

2. The invention as set forth in claim 1, wherein:

(a) said cooperable means comprises a collar rigidly carried on the shaft,

(b) said collar having a detent notch, and said finger having a portion engaging the walls of said detent notch.

3. The invention as set forth in claim 2, wherein:

(a) said finger is elongate, and has a side projection,

(b) said side projection engaging the walls of the detent notch.

4. The invention as set forth in claim 1, wherein:

(a) said detent finger is elongate,

(b) said housing comprising a cover plate,

(c) said detent finger being carried by said cover plate.

5. The invention as set forth in claim 4, wherein:

(a) said detent finger is integral with said cover plate.

6. The invention as set forth in claim 4, wherein:

(a) said cover plate is sonic welded to the remainder of the housing.

7. The invention as set forth in claim 2, wherein:

(a) said shaft is ribbed at one end,

(b) said collar having a bore press fitted onto the ribbed portion of the shaft.

19. The invention as set forth in claim 1, wherein:

(a) said one-way track comprises a smooth surface of the shaft,

(b) said pawl device comprising a light back-check leaf spring normally biased into a binding relationship with respect to the smooth surface of the shaft.

8. A swing-force indicator for a playing piece of sports equipment intended to be swung in the playing of a game, comprising, in combination:

(a) an elongate housing having an elongate open side,

(b) a shaft having a one-way track and having a relieved portion coextensive with said one-way track,

(c) a weight member slidable on the shaft, having a pawl engageable with the one-way track of the shaft,

(d) a spring on said shaft, biasing the weight member toward one end of the shaft against the action of the one-way track,

(e) a finger piece on one end of said shaft to turn the shaft for traversal of the pawl over said relieved portion, and

(f) cooperable bearing means on the ends of the housing and shaft, enabling the shaft to be inserted in the housing through the elongate open side thereof with solely transaxial movement with respect to the housing, said means rotatably supporting the shaft in the housing for movement of the weight member along the shaft.

9. The invention as set forth in claim 8, wherein:

(a) said cooperable bearing means comprises a bearing block carrying one end of the shaft,

(b) said housing having oppositely disposed shoulders on its inner surface,

(c) said bearing block engaging and being supported by said shoulders when the shaft is assembled in the housing.

10. The invention as set forth in claim 8, wherein:

(a) said cooperable bearing means comprises a bearing block carrying one end of the shaft,

(b) said housing having oppositely disposed transverse slots in its inner surface,

(c) said bearing block having opposite rib portions received in said slots when the shaft is assembled in the housing.

11. The invention as set forth in claim 9, wherein:

(a) said housing has a cover plate,

(b) said cover plate engaging the bearing block to thereby hold it captive.

12. The invention as set forth in claim 10, wherein:

(a) the slots are substantially parallel to one another and normal to the housing axis,

(b) said opposite rib portions of the block being substantially parallel to one another to enable the block to slide into the slots in the housing from the side thereof.

13. The invention as set forth in claim 8, wherein:

(a) said cooperable bearing means comprises a saddle carried by the housing, said saddle comprising a yoke having a divergent mouth and re-entrant side walls, to enable the shaft to be inserted into the yoke from the side thereof and held captive therein.

14. The invention as set forth in claim 13, and further including:

(a) a head on the shaft, engageable with an end wall of the housing and the yoke, to restrain the shaft against axial movement in the housing.

15. The invention as set forth in claim 13, wherein:

(a) said yoke has a side surface constituting a seat for one end of the spring.

16. The invention as set forth in claim 13, and further including:

(a) strengthening ribs extending between the yoke and the end wall of the housing.

17. The invention as set forth in claim 13, and further including:

(a) strengthening ribs extending between the yoke and the bottom wall of the housing.

18. The invention as set forth in claim 14, and further including:

(a) strengthening ribs extending between the yoke and the end wall of the housing,

(b) said yoke, ribs, and end wall defining a box-like structure in which the head on the shaft is confined.