US3767506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for assembling tone hole covering in wood-wind musical instrument
Assignee: Nippon Gakki Co Ltd
•
Filing: 1972-01-06
•
Granted: 1973-10-23
•
Expires: 1992-01-06
Abstract
Abstract A process for assembling a tone hole covering assembly comprises interposing an uncured thermosetting resin between the inner bottom surface of the cup and the pad, and heating and curing the resin while the pad is kept engaged with the tone hole socket of the instrument body in a predetermined airtight condition. The airtightness between the pad and the tone hole socket can be secured without the necessity for repeatedly adjusting the relative position of the pad and the cup.
Inventors
- 👤 G Kawakami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:12
CPC Classifications
G; G10; G10D; G10D9/00; G10D9/04; G10D9/047
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
32 words
The process as claimed in claim 1, wherein said thermosetting resin is heated during said heating and curing step at a temperature of 100* to 120* C for 30 to 60 minutes.
Claim 2
Dependent Claim
29 words
The process as claimed in claim 1, further comprising a step of coating said strengthening material with polyethylene sheets after said material is soaked into the thermosetting resinous solution.
Claim 3
Dependent Claim
16 words
The process as claimed in claim 1, wherein said strengthening material is a sheet of paper.
Claim 4
Dependent Claim
14 words
The process as claimed in claim 1 wherein said strengthening material is generally doughnut-shaped.
Claim 5
Dependent Claim
34 words
The process as claimed in claim 1 wherein said step of securing the pad in the cup comprises passing a screw member through said pad and threadably engaging said screw member with said cup.
Claim 6
Dependent Claim
65 words
The process as claimed in claim 1 wherein the steps prior to pressing the pad to the edge of the tone hole socket are performed prior to assembling said cup to the musical instrument, and comprising the step of assembling said cup carrying said pad and shaped material to said musical instrument prior to pressing the pad to the edge of the tone hole socket.
Claim 7
Dependent Claim
16 words
The process as claimed in claim 1, wherein said strengthening material is a sheet of felt.
Claim 8
Dependent Claim
17 words
The process as claimed in claim 1 wherein said strengthening material is a sheet of non-woven fabric.
Claim 9
Dependent Claim
24 words
The process as claimed in claim 1, wherein said strengthening material is dried at a temperature of about 60* C for about 15 minutes.
Claim 10
Dependent Claim
26 words
The process as claimed in claim 10, wherein said thermosetting resin is heated at a temperature of 100* to 120* C for 30 to 60 minutes.
Claim 11
Dependent Claim
36 words
The process as claimed in claim 1 comprising covering at least one side of said coated layer of strengthening material with a thin sheet of polyethylene prior to said drying step to form a multi-layer structure.
Claim 12
Dependent Claim
32 words
The process as claimed in claim 12 comprising covering both sides of said coated layer of strengthening material with thin sheets of polyethylene before said drying step to form a three-layer structure.
Claim 13
Dependent Claim
26 words
The process as claimed in claim 13 wherein said covering step comprises covering said coated layer of strengthening material with separate respective thin sheets of polyethylene.
References Cited (Backward Citations)
US1786833A
Cited
US3421399A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |