US4118258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration damping through adherence to a layer comprising polyisoprene and the damped structure resulting
Assignee: Individual
•
Filing: 1977-04-11
•
Granted: 1978-10-03
•
Expires: 1997-04-11
Abstract
Abstract Polyisoprenes having a minimum of 60% of 1,2- and 3,4-vinyl structures are useful as vibration-damping materials. The polyisoprenes are used individually or as a mixture with inorganic or organic fillers, or in the form of block copolymers.
Inventors
- 👤 Bernard Jacques Graveron
- 👤 Alain Jacques Essel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:27
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/3605; B; B32; B32B; B32B15/00; B32B15/04; B32B15/06; C; C08; C08L; C08L9/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A method of damping vibrations which consists of attaching to the element which causes vibrations a layer of vibration-damping material which comprises polyisoprene in which the total percentage of 1,2- and 3,4-vinyl structures is at least 60%.
Claim 2
Independent Claim
37 words
A method of damping vibrations which consists of attaching to the element which causes vibrations a layer of vibration-damping material which comprises polyisoprene in which the total percentage of 1,2- and 3,4-vinyl structures is at least 60%.
Claim 3
Dependent Claim
32 words
The method according to claim 1 which comprises interposing between said element which causes vibrations and a second element to which the vibrations are transmitted said vibration-damping material which comprises said polyisoprene.
Claim 4
Dependent Claim
15 words
The method according to claim 1 wherein said vibration-damping material comprises at least one filler.
Claim 5
Dependent Claim
30 words
The method according to claim 1 wherein said polyisoprene is in the form of a block copolymer of polybutyl methacrylate, polyisoprene and polybutyl methacrylate in the weight proportion of 20-60-20.
Claim 6
Dependent Claim
36 words
The method according to claim 1 wherein said layer comprises polyisoprene mixed with natural rubber, polyisoprene mixed with styrene-butadiene copolymer or polyisoprene mixed with a butyl rubber in the proportion of 50% by weight of polyisoprene.
Claim 7
Dependent Claim
19 words
A support having a layer of a material which comprises polyisoprene containing at least 60% of 1,2- and 3,4-structures.
Claim 8
Dependent Claim
19 words
A support having a layer of a material which comprises polyisoprene containing at least 60% of 1,2- and 3,4-structures.
Claim 9
Dependent Claim
24 words
A sandwich structure which comprises two support plates and sandwiched therebetween a material which comprises polyisoprene containing at least 60% of 1,2- and 3-4-structures.
Claim 10
Dependent Claim
24 words
A sandwich structure which comprises two support plates and sandwiched therebetween a material which comprises polyisoprene containing at least 60% of 1,2- and 3-4-structures.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |