Patent US3857296A successfully refreshed from Google Patents.
US3857296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration-damped rotatable drive member
Assignee: Individual
•
Filing: 1974-02-11
•
Granted: 1974-12-31
•
Expires: 1994-02-11
Abstract
Abstract The noise generated by a rotating disk-like member when it contacts a 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. Gear wheels illustrate rotatable drive disks that are vibration-damped pursuant to the invention.
Inventors
- 👤 K Tsunoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:24
CPC Classifications
B; B23; B23D; B23D61/00; B23D61/02; B23D61/025; B23D61/026; F; F16; F16H; F16H53/00; F16H53/02; F16H55/00; F16H55/02; F16H55/14; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A avibration-damped rotatable drive disk that contacts a 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.
Claim 2
Dependent Claim
47 words
A avibration-damped rotatable drive disk that contacts a 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.
Claim 3
Dependent Claim
29 words
The vibration-damped rotatable drive 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
27 words
The vibration-damped rotatable drive 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
19 words
The vibration-damped rotatable drive disk of claim 1 wherein said disk and the rigid sheet are made of metal.
Claim 6
Dependent Claim
40 words
The vibration-damped rotatable drive disk of claim 1 wherein said disk is a gear wheel and the combined thickness of the rigid sheet and the layer of viscoelastic material is not more than about the thickness of said gear wheel.
Claim 7
Dependent Claim
32 words
The vibration-damped gear wheel of claim 5 wherein the rigid sheet is in the form of equal circular segments bonded to the layer of viscoelastic material with small gaps between adjacent segments.
Claim 8
Dependent Claim
36 words
The vibration-damped gear wheel of claim 5 wherein said gear wheel and the rigid sheet are made of metal and the viscoelastic material comprises a material selected from the group consisting of amorphous polymers and copolymers.
Claim 9
Dependent Claim
40 words
The vibration-damped rotatable drive disk of claim 1 wherein said disk is a cam plate and the combined thickness of the rigid sheet and the layer of viscoelastic material is not more than about the thickness of said cam plate.
Claim 10
Dependent Claim
32 words
The vibration-damped cam plate of claim 8 wherein the rigid sheet is slightly smaller than said cam plate and thus leaves a marginal band along the edge of said cam plate uncovered.
Claim 11
Dependent Claim
36 words
The vibration-damped cam plate of claim 9 wherein said cam plate and the rigid sheet are made of metal and the viscoelastic material comprises a material selected from the group consisting of amorphous polymers and copolymers.
References Cited (Backward Citations)
US3566710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |