Patent US3485451A successfully refreshed from Google Patents.
US4158979A
Expired / Lapsed
US
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Pad for use with a woodwind musical instrument
Assignee: MICHIO SUGIHARA
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Filing: 1977-09-28
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Granted: 1979-06-26
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Expires: 1997-09-28
Abstract
Abstract A piece of pad for use with a key cup of a woodwind musical instrument. The pad is made of either a silicone rubber only or a felt containing therein a silicone rubber, and has a flat and smooth bottom surface. The pad is fitted in the key cup with the bottom surface thereof facing a tone hole of the instrument. The silicone rubber assures desirable physical properties of the pad such as an appropriate elasticity or flexibility, and the tone hole of the instrument can be positively closed with the flat and smooth bottom surface of the pad upon pushing of the key cup by the instrument player.
Inventors
- 👤 Michiko Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:57
CPC Classifications
G; G10; G10D; G10D9/00; G10D9/04; G10D9/047
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
A pad for use with a woodwind musical instrument, said instrument having a plurality of tone holes and a plurality of key cups, said pad having a bottom surface and being adapted to be mounted in said key cup with the bottom surface thereof facing the tone hole of said instrument, wherein the improvement comprises forming said pad of a felt impregnated with a silicone rubber while said silicone rubber is in a liquid state and then hardening said liquid silicone rubber impregnated felt by exposing the rubber impregnated felt to a silicone rubber hardening temperature for an appropriate time period, said silicone rubber providing said pad with substantial elasticity, and said bottom surface of said pad being flat and smooth at least at the portion thereof which is to contact said tone hole upon manipulation of said key cup by an instrument player.
Claim 2
Dependent Claim
144 words
A pad for use with a woodwind musical instrument, said instrument having a plurality of tone holes and a plurality of key cups, said pad having a bottom surface and being adapted to be mounted in said key cup with the bottom surface thereof facing the tone hole of said instrument, wherein the improvement comprises forming said pad of a felt impregnated with a silicone rubber while said silicone rubber is in a liquid state and then hardening said liquid silicone rubber impregnated felt by exposing the rubber impregnated felt to a silicone rubber hardening temperature for an appropriate time period, said silicone rubber providing said pad with substantial elasticity, and said bottom surface of said pad being flat and smooth at least at the portion thereof which is to contact said tone hole upon manipulation of said key cup by an instrument player.
Claim 3
Dependent Claim
21 words
A pad as defined in claim 1, wherein said pad is covered over the bottom surface thereof with a fish skin.
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) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |