US3824854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound trim apparatus for boat speedometer
Assignee: Westinghouse Electric Corp
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Filing: 1973-03-23
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Granted: 1974-07-23
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Expires: 1993-03-23
Abstract
Abstract The sound generating device is mounted on a boat responsive to a shaft rotating at a speed proportional to the speed of the boat. Fixed to the shaft is a cam. Upon each rotation of the shaft, the cam engages a trip hammer which is mounted on support means. The trip hammer is biased by a spring which tends to hold the hammer stationary against the support means. Upon each rotation of the shaft, the cam engages the trip hammer causing it to rotate against a strike plate, thereby creating a clicking sound. The frequency of the clicks and consequently the pitch of the sound varies directly with the speed of the boat, thereby giving an indication of the speed and the change in speed without requiring the operator to divert his attention to look at a speedometer dial.
Inventors
- 👤 A Weinstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:38
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/02; G01P5/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
121 words
A sound trim apparatus for use with a boat speedometer comprising: a water driven impeller, a shaft attached and rotatably responsive to said impeller, cam means mounted on said shaft, a trip hammer mounted next adjacent said cam means so as to be tripped by said cam means upon rotation of said shaft to move said hammer from a first position, a spring means connected to said trip hammer for maintaining tension on said trip hammer tending to hold said trip hammer in said first position, and a strike plate positioned in the path of movement of said hammer for producing sound when struck so that the pitch of said sound varies with the frequency of said rotations of said shaft.
Claim 2
Dependent Claim
121 words
A sound trim apparatus for use with a boat speedometer comprising: a water driven impeller, a shaft attached and rotatably responsive to said impeller, cam means mounted on said shaft, a trip hammer mounted next adjacent said cam means so as to be tripped by said cam means upon rotation of said shaft to move said hammer from a first position, a spring means connected to said trip hammer for maintaining tension on said trip hammer tending to hold said trip hammer in said first position, and a strike plate positioned in the path of movement of said hammer for producing sound when struck so that the pitch of said sound varies with the frequency of said rotations of said shaft.
Claim 3
Dependent Claim
26 words
A sound trim apparatus as defined in claim 1, wherein said spring means includes a coil spring and means for adjusting the tension on said spring.
Claim 4
Dependent Claim
28 words
A sound trim apparatus as defined in claim 1, further including a resonator case enclosing said trip hammer, said spring means and said strike plate for resonating sound.
Claim 5
Dependent Claim
34 words
A sound trim apparatus as defined in claim 3, further including means connected to said spring means for adjusting the tension on said spring means so arranged and constructed to adjust the sound level.
Claim 6
Dependent Claim
109 words
A sound trim apparatus for use with a boat speedometer having a shaft adapted to rotate at a speed in proportion to the speed of the boat comprising: cam means mounted on said shaft, support means mounted adjacent said shaft, a trip hammer rotatably affixed to said support means next adjacent said cam means so arranged and constructed to rotate when engaged by said cam means, spring means connected between said support means and said trip hammer tending to hold said trip hammer against said support means, and a strike plate positioned in the path of rotational movement of said hammer for producing sound when struck by said hammer.
Claim 7
Dependent Claim
109 words
A sound trim apparatus for use with a boat speedometer having a shaft adapted to rotate at a speed in proportion to the speed of the boat comprising: cam means mounted on said shaft, support means mounted adjacent said shaft, a trip hammer rotatably affixed to said support means next adjacent said cam means so arranged and constructed to rotate when engaged by said cam means, spring means connected between said support means and said trip hammer tending to hold said trip hammer against said support means, and a strike plate positioned in the path of rotational movement of said hammer for producing sound when struck by said hammer.
Claim 8
Dependent Claim
23 words
The sound trim apparatus of claim 5 wherein said spring means includes a spring and means for adjusting the tension on said spring.
Claim 9
Dependent Claim
26 words
The sound trim apparatus of claim 5, further including a resonator case enclosing said trip hammer, said spring means, and said strike plate for resonating sound.
Claim 10
Dependent Claim
27 words
The sound trim apparatus of claim 7, further including means connected to said spring means for adjusting the tension on said spring for adjusting the sound level.
References Cited (Backward Citations)
US914959A
Cited
US3756077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |