US3799025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration-damped rotatable cutting disk
Assignee: Individual
•
Filing: 1971-07-23
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Granted: 1974-03-26
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Expires: 1991-07-23
Abstract
Abstract The noise generated by a rotating disk-like member when it contacts a fixed or movable element is appreciably diminished by coating one surface of the disk-like member with a viscoelastic material and adhering a rigid sheet to the viscoelastic material. Rotary saw blades and gear wheels illustrate disks that are vibration-damped pursuant to the invention.
Inventors
- 👤 K Tsunoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:54
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/02; F16H55/14; B; B23; B23D; B23D61/00; B23D61/02; B23D61/025; B23D61/026; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9319; Y10T83/9372; Y10T83/9403
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
A vibration-damped rotatable disk with a cutting periphery that contacts a fixed or movable element during rotation, which comprises a layer of viscoelastic material adherent to one face of said disk, and a relatively rigid sheet of a thickness less than that of said disk bonded to said layer of viscoelastic material and covering a substantial portion of said face of said disk, the combined thickness of said rigid sheet and said layer of viscoeLastic material being not more than the thickness of said disk.
Claim 2
Dependent Claim
85 words
A vibration-damped rotatable disk with a cutting periphery that contacts a fixed or movable element during rotation, which comprises a layer of viscoelastic material adherent to one face of said disk, and a relatively rigid sheet of a thickness less than that of said disk bonded to said layer of viscoelastic material and covering a substantial portion of said face of said disk, the combined thickness of said rigid sheet and said layer of viscoeLastic material being not more than the thickness of said disk.
Claim 3
Dependent Claim
28 words
The vibration-damped rotatable disk of claim 1 wherein the layer of viscoelastic material has a thickness of not more than about half of the thickness of said disk.
Claim 4
Dependent Claim
26 words
The vibration-damped rotatable disk of claim 1 wherein the layer of viscoelastic material comprises a material selected from the group consisting of amorphous polymers and copolymers.
Claim 5
Dependent Claim
18 words
The vibration-damped rotatable disk of claim 1 wherein said disk and the rigid sheet are made of metal.
Claim 6
Dependent Claim
20 words
The vibration-damped rotatable disk of claim 4 wherein said disk is a rotary saw blade with teeth on the periphery.
Claim 7
Dependent Claim
46 words
The vibration-damped rotatable disk of claim 4 wherein said disk is a rotary cutting blade with a circular depression in one face of said blade and the rigid sheet fits within said depression and is bonded to said depression by the layer of the viscoelastic material.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |