Patent US4928567A successfully refreshed from Google Patents.
US4928567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutch unit for high-hat cymbals
Assignee: Yamaha Corp
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Filing: 1989-07-06
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Granted: 1990-05-29
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Expires: 2009-07-06
Abstract
Abstract In construction of a clutch unit for a high-hat cymbal in which mechanical connection of an upper cymbal plate to an extension rod is canceled by striking a clutch lever by a stick, the clutch lever is arranged in a substantially horizontal disposition. Cancellation of the mechanical connection can be effected by vertically striking the clutch lever as in the case of normal performance of the cymbal.
Inventors
- 👤 Makoto Kurosaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:18
CPC Classifications
G; G10; G10D; G10D13/00; G10D13/01; G10D13/06; G10D13/063; G10D13/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A clutch unit for a high-hat cymbal, in which a lower cymbal plate is mounted atop a vertical post, an extension rod is idly inserted through said post and normally elastically urged to move upwards and an upper cymbal plate is mechanically connected to said extension rod via said clutch unit for selective percussive contact with said lower cymbal plate, comprising a clutch bolt idly inserted over said extension rod in fixed connection to said upper cymbal plate and provided with a depression, a holder secured to said extension rod above said clutch bolt, a hook block pivoted to said holder, and provided with at least one hook engageable with said depression in said clutch bolt and a clutch lever substantially horizontally fixed thereto, and means for elastically holding said hooking in engagement with said depression.
Claim 2
Dependent Claim
136 words
A clutch unit for a high-hat cymbal, in which a lower cymbal plate is mounted atop a vertical post, an extension rod is idly inserted through said post and normally elastically urged to move upwards and an upper cymbal plate is mechanically connected to said extension rod via said clutch unit for selective percussive contact with said lower cymbal plate, comprising a clutch bolt idly inserted over said extension rod in fixed connection to said upper cymbal plate and provided with a depression, a holder secured to said extension rod above said clutch bolt, a hook block pivoted to said holder, and provided with at least one hook engageable with said depression in said clutch bolt and a clutch lever substantially horizontally fixed thereto, and means for elastically holding said hooking in engagement with said depression.
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) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |