Patent US3968718A successfully refreshed from Google Patents.
US3968718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum type musical instrument
Assignee: Lee Raymond Organization Inc
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Filing: 1975-08-11
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Granted: 1976-07-13
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Expires: 1995-08-11
Abstract
Abstract First and second foot pedal actuated drums are disposed adjacent each other. Each drum is provided with a horizontal shaft having a drum beater secured thereto and extending at right angles, the beater being disposed adjacent a drum head. Flexible resilient spring means interconnect adjacent ends of the two shafts whereby actuation of the foot pedal of one drum causes the one drum to sound while the other drum is caused to sound without actuation of its foot pedal.
Inventors
- 👤 Earl Randy Carver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:17
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/10; G10D13/11
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
175 words
A drum type musical instrument comprising: first and second drums; first and second pedal actuated beater means, each means having a mechanism with a horizontal shaft for controlling the position of a drum beater that will beat a corresponding one of the drums, the shafts being disposed end to end with one end of one shaft adjacent one end of the other shaft; an elongated flexible resilient coil spring; a first cylinder at one end of the spring; a second cylinder at the other end of the spring; first attachment means detachably securing the first cylinder to said one end of said one shaft; and second attachment means located at said one end of said other shaft for receiving the second cylinder and detachably securing the cylinder to said other shaft, the second attachment means having a recess within which the second cylinder can be rotated to a desired angular position relative to the first cylinder prior to being detachably secured to said other shaft, whereby the spring can be pre-tensioned to the degree desired.
Claim 2
Dependent Claim
175 words
A drum type musical instrument comprising: first and second drums; first and second pedal actuated beater means, each means having a mechanism with a horizontal shaft for controlling the position of a drum beater that will beat a corresponding one of the drums, the shafts being disposed end to end with one end of one shaft adjacent one end of the other shaft; an elongated flexible resilient coil spring; a first cylinder at one end of the spring; a second cylinder at the other end of the spring; first attachment means detachably securing the first cylinder to said one end of said one shaft; and second attachment means located at said one end of said other shaft for receiving the second cylinder and detachably securing the cylinder to said other shaft, the second attachment means having a recess within which the second cylinder can be rotated to a desired angular position relative to the first cylinder prior to being detachably secured to said other shaft, whereby the spring can be pre-tensioned to the degree desired.
Claim 3
Dependent Claim
12 words
The instrument of claim 1 wherein each attachment means includes a thumbscrew.
Claim 4
Dependent Claim
29 words
The instrument of claim 2 wherein the thumbscrew in the second attachment means bears against the second cylinder when the second cylinder is detachably secured to said other shaft.
Claim 5
Dependent Claim
21 words
The instrument of claim 3 wherein the thumbscrew in the first attachment means passes through a bore in the first cylinder.
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) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |