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US4094504A Expired / Lapsed US ⏱️ 0.0 years remaining

Signalling device to be used with a sport implement for detecting and indicating the proper or improper use thereof

Assignee: Individual
•
Filing: 1976-03-03
•
Granted: 1978-06-13
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Expires: 1996-03-03
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Abstract

Abstract A signalling device to be used with a sport implement, such as, for example, a tennis racquet or golf club, for detecting and indicating the proper use thereof, includes a plurality of mechanical reed members, the longitudinal axes of which are disposed with respect to the tennis racquet or golf club structure as to be aligned with the stroke direction when a proper stroke is performed whereby the signalling device will emit a well-defined audible signal indicating the performance of a proper stroke. The reed members may be disposed within a housing which may, in turn, be mounted upon the racquet frame or club shaft, or alternatively, may be integrally disposed within the frame or shaft, the latter structures serving as the housings thereof. Still further, and alternatively, in lieu of the reed members being aligned with the stroke direction, that is, the same are, within such embodiment, disposed perpendicular to the plane of the tennis racquet or golf club face, the reed members may likewise be disposed parallel to the plane of the racquet or club face and perpendicular to the longitudinal axis of the implement whereupon, instead of such members emitting a signal when a proper stroke is performed, such members emit an audible signal when an improper stroke is performed.

Inventors

  • 👤 Kenneth S. Barasch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 22:12
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3632; A63B69/3635; A63B69/38

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 149 words
A signalling device in combination with a tennis racquet for detecting and indicating the proper or improper use thereof, comprising: air-actuable means comprising a plurality of reed members, each said reed member having a longitudinal axis, for emitting an audible signal when air passes through said means in a predetermined manner; some of said reed members being mounted on said tennis racquet in a first direction so as to indicate a proper forehand stroke of said tennis racquet and other ones of said reed members being mounted on said tennis racquet in a direction opposite said first direction so as to indicate a proper backhand stroke of said tennis racquet; said proper stroke being indicated by said reed members when said longitudinal axis is moved parallel to the direction of said forehand and backhand stroke of said tennis racquet; and means mounting said reed members to said tennis racquet.
Claim 2
Dependent Claim 149 words
A signalling device in combination with a tennis racquet for detecting and indicating the proper or improper use thereof, comprising: air-actuable means comprising a plurality of reed members, each said reed member having a longitudinal axis, for emitting an audible signal when air passes through said means in a predetermined manner; some of said reed members being mounted on said tennis racquet in a first direction so as to indicate a proper forehand stroke of said tennis racquet and other ones of said reed members being mounted on said tennis racquet in a direction opposite said first direction so as to indicate a proper backhand stroke of said tennis racquet; said proper stroke being indicated by said reed members when said longitudinal axis is moved parallel to the direction of said forehand and backhand stroke of said tennis racquet; and means mounting said reed members to said tennis racquet.
Claim 3
Dependent Claim 28 words
A signalling device as set forth in claim 1, wherein said mounting means comprises: bores within said tennis racquet within which said air actuatable reed members are disposed.

References Cited (Backward Citations)

CA615576A Cited
US1417019A Cited
US1519052A Cited
US1549350A Cited
CH254276A Cited
US2780098A Cited
US3730530A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-06-12 1981-12-12 1982-06-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-06-12 1985-12-12 1986-06-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-06-12 1989-12-12 1990-06-13 $7700.00 Window Closed / Lapsed

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