Patent US3220282A successfully refreshed from Google Patents.
US3674909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pitch change limiting device for stringed musical instruments
Assignee: Individual
•
Filing: 1970-07-06
•
Granted: 1972-07-04
•
Expires: 1990-07-06
Abstract
Abstract A pitch changing device for string instruments comprising an adapter cylinder rigidly mounted on the tuning key shaft, an upper ring rotatably mounted on the adapter cylinder, a lower ring rotatably mounted on the upper ring, and a limit stop rigidly mounted on the instrument head. The device enables the user to limit the rotational motion of the tuning key shaft to a predetermined angular value.
Inventors
- 👤 Joseph Peters Jr
- 👤 Brian P Feeney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:24
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
In a stringed musical instrument having a tuning key and a string connected to said tuning key, the improvement comprising, a body supporting said key for rotational movement, limit stop means mounted on said body, rotational stop means mounted on said key for interacting with said limit stop means to confine the rotational motion of said tuning key to a predetermined angular arc, and means for adjusting at least one of said stop means to selectively change said angular arc.
Claim 2
Dependent Claim
80 words
In a stringed musical instrument having a tuning key and a string connected to said tuning key, the improvement comprising, a body supporting said key for rotational movement, limit stop means mounted on said body, rotational stop means mounted on said key for interacting with said limit stop means to confine the rotational motion of said tuning key to a predetermined angular arc, and means for adjusting at least one of said stop means to selectively change said angular arc.
Claim 3
Dependent Claim
12 words
The device of claim 1 including means of adjusting said angular arc.
Claim 4
Dependent Claim
93 words
In a tuning key for stringed musical instruments in combination, a limit stop rigidly mounted on said instrument, an inner annular body rigidly mounted on the rotatable shaft of said tuning key, an upper annular body rotatably mounted on said inner annular body and having means to lock said upper annular body to said inner annular body and contact said limit stop, and a lower annular body rotatably mounted on said upper annular body and having means to lock said lower annular body to said upper annular body and contact said limit stop.
Claim 5
Dependent Claim
93 words
In a tuning key for stringed musical instruments in combination, a limit stop rigidly mounted on said instrument, an inner annular body rigidly mounted on the rotatable shaft of said tuning key, an upper annular body rotatably mounted on said inner annular body and having means to lock said upper annular body to said inner annular body and contact said limit stop, and a lower annular body rotatably mounted on said upper annular body and having means to lock said lower annular body to said upper annular body and contact said limit stop.
Claim 6
Dependent Claim
88 words
In a tuning key for stringed musical instruments in combination, a limit stop rigidly mounted on said instrument, an adapter cylinder rigidly mounted on the rotatable shaft of said tuning key, an upper ring rotatably mounted on said adapter cylinder and having a thumb screw to lock said upper ring to said adapter cylinder and contact said limit stop, and a lower ring rotatably mounted on said upper ring and having a thumb screw to lock said lower ring to said upper ring and contact said limit stop.
Claim 7
Dependent Claim
88 words
In a tuning key for stringed musical instruments in combination, a limit stop rigidly mounted on said instrument, an adapter cylinder rigidly mounted on the rotatable shaft of said tuning key, an upper ring rotatably mounted on said adapter cylinder and having a thumb screw to lock said upper ring to said adapter cylinder and contact said limit stop, and a lower ring rotatably mounted on said upper ring and having a thumb screw to lock said lower ring to said upper ring and contact said limit stop.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |