Patent US3855842A successfully refreshed from Google Patents.
US3855842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for testing golf clubs
Assignee: Sumitomo Rubber Industries Ltd
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Filing: 1973-05-16
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Granted: 1974-12-24
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Expires: 1993-05-16
Abstract
Abstract An apparatus for testing the dynamic performance of a golf club by simulating human golf swings including an arm driven by a first motor for simulating the rotation of the golfer''s arms about his body and a club holder driven by a second motor for simulating the rotation of the golfer''s wrists about his arms. The arm and club holder may be driven independently.
Inventors
- 👤 J Imabori
- 👤 T Kuzuoka
- 👤 A Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:22
CPC Classifications
G; G01; G01M; G01M99/00; G01N; G01N3/00; G01N33/00; G01N33/0078; G01N33/008
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
An apparatus for testing dynamic characteristics of a golf club, said apparatus comprising: a. a main body; b. arm means rotatably mounted on said main body, said arm means swinging relative to said main body; c. club holder means for holding said golf club and rotatably mounted on said arm means, said club holder means rotating relative to said arm means; d. first drive means for rotating said arm means independently of said holder means; e. second drive means independent of said first drive means, for rotating said holder means independently of said arm means; and f. signal generator means for applying first and second program signals to said first and second drive means, respectively, whereby said drive means are controlled independently of each other by said program signals so that a plurality of golf club swing patterns may be simulated by the combination of independent operations of said first and second drive means.
Claim 2
Independent Claim
154 words
An apparatus for testing dynamic characteristics of a golf club, said apparatus comprising: a. a main body; b. arm means rotatably mounted on said main body, said arm means swinging relative to said main body; c. club holder means for holding said golf club and rotatably mounted on said arm means, said club holder means rotating relative to said arm means; d. first drive means for rotating said arm means independently of said holder means; e. second drive means independent of said first drive means, for rotating said holder means independently of said arm means; and f. signal generator means for applying first and second program signals to said first and second drive means, respectively, whereby said drive means are controlled independently of each other by said program signals so that a plurality of golf club swing patterns may be simulated by the combination of independent operations of said first and second drive means.
Claim 3
Dependent Claim
80 words
The apparatus as set forth in claim 1 wherein each of said first and second drive means comprises: a. potentiometer means coupled to the associated drive means for producing a position signal indicative of the actual angle of rotation of the drive means; and b. servo-amplifier means for receiving and comparing corresponding program and position signals to produce an error signal which causes the drive means to assume the actual position called for by the value of the program signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |