US4708047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pad cups for a wood wind
Assignee: Yamaha Corp
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Filing: 1986-04-21
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Granted: 1987-11-24
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Expires: 2006-04-21
Abstract
Abstract In construction of a pad for a pad cup of a woodwind, the outermost skin bag is internally provided, at least in the region where the pad cup contacts an associated sound hole in the woodwind, with an air impervious layer such as a bladder sheet to ensure that the sound hole will be closed with a high degree of airtightness and which will ensure that the desired pad configuration is maintained over a long period of time.
Inventors
- 👤 Kyoetsu Kanazawa
- 👤 Mitsuo Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:18
CPC Classifications
G; G10; G10D; G10D9/00; G10D9/04; G10D9/047
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
An improved pad cup for a wood wind, comprising: a cup having an open end; and a pad located in said cup, said pad including: a flexible, air pervious core; a flexible, resilient, air impervious layer covering said core in the area of said open end of said cup; and a skin bag covering both said core and said air impervious layer.
Claim 2
Dependent Claim
62 words
An improved pad cup for a wood wind, comprising: a cup having an open end; and a pad located in said cup, said pad including: a flexible, air pervious core; a flexible, resilient, air impervious layer covering said core in the area of said open end of said cup; and a skin bag covering both said core and said air impervious layer.
Claim 3
Dependent Claim
22 words
An improved pad cup as claimed in claim 1 in which said air impervious layer is a bladder bag accommodating said core.
Claim 4
Dependent Claim
25 words
An improved pad cup as claimed in claim 1, in which said air impervious layer is a bladder sheet which is coextensive with said core.
Claim 5
Dependent Claim
20 words
An improved pad cup as claimed in claim 1, in which said air impervious layer is flexible, resilient plastic film.
Claim 6
Dependent Claim
26 words
An improved pad cup as claimed in claim 1, in which said air impervious layer includes resin impregnated in the inner surface of said skin bag.
Claim 7
Dependent Claim
16 words
An improved pad cup as claimed in claim 5, in which said resin is thermo-setting resin.
Claim 8
Dependent Claim
16 words
An improved pad cup as claimed in claim 5, in which said resin is thermo-plastic resin.
Claim 9
Dependent Claim
28 words
An improved pad cup as claimed in claim 1, wherein said air impervious layer covers said core across the entire area of said open end of said cup.
Claim 10
Dependent Claim
24 words
An improved pad cup for wood wind as claimed in claim 1, further including a key coupled to said cup via a key rod.
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) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |