US4196162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making gasket including spherical stop means and vulcanized in-situ
Assignee: Sipavel-Sociedade de Isolamentos Para Veiculos Ltda
•
Filing: 1979-02-21
•
Granted: 1980-04-01
•
Expires: 1999-02-21
Abstract
Abstract A process for the production of seals between surfaces operating at elevated temperatures is disclosed wherein a vulcanizable elastomer mixture is vulcanized by the heat transferred from the surfaces, and by the pressure created by adjustment of the space between the surfaces. In the invention, spacers are arranged between the surfaces to determine the final position thereof and hence the thickness of the seals and the pressure resistance of the spacers is higher than that of the elastomer mixture before or during vulcanization.
Inventors
- 👤 Gunter Stichter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:29
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/58; B29C43/00; B29C43/02; B29C43/18; B29D; B29D99/00; B29D99/0053; F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/102; B29C65/00; B29C65/78; B29C65/7802; B29C65/782; B29C65/7823; B29C65/7826; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/26; F02; F02F; F02F7/00; F02F7/006; Y; Y10; Y10S; Y10S277/00; Y10S277/931; Y10S277/933
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
99 words
In a method for sealing between two surfaces which operate at elevated temperatures wherein a vulcanizable elastomer composition is vulcanized in-situ by heat from said surfaces as a result of said elevated temperatures and under pressure developed by adjustment of spacing between said surfaces the improvement comprising: forming a sheet of unvulcanized elastomer composition, depositing a layer of spherical bodies of a suitable size and material on said sheet to limit compression of said elastomer composition between said surfaces, embedding said bodies at least partially in said sheet, inserting said sheet between said surfaces and curing said elastomer in-situ.
Claim 2
Dependent Claim
99 words
In a method for sealing between two surfaces which operate at elevated temperatures wherein a vulcanizable elastomer composition is vulcanized in-situ by heat from said surfaces as a result of said elevated temperatures and under pressure developed by adjustment of spacing between said surfaces the improvement comprising: forming a sheet of unvulcanized elastomer composition, depositing a layer of spherical bodies of a suitable size and material on said sheet to limit compression of said elastomer composition between said surfaces, embedding said bodies at least partially in said sheet, inserting said sheet between said surfaces and curing said elastomer in-situ.
Claim 3
Dependent Claim
27 words
The process according to claim 1 wherein the spherical bodies are made from material selected from the group consisting of lead, hard rubber, ceramics, wood or glass.
Claim 4
Dependent Claim
17 words
The process according to claim 1 wherein the elastomer composition contains up to about 70% shredded cork.
Claim 5
Dependent Claim
26 words
The process according to claim 1 wherein the composition is performed into sealing elements and are thus exposed to vulcanization between the surfaces to be sealed.
Claim 6
Dependent Claim
14 words
The process according to claim 1 wherein the composition includes, fillers, plasticizers and vulcanizers.
Claim 7
Dependent Claim
18 words
The process according to claim 1 wherein at least one of the surfaces is solidly connected to spacers.
Claim 8
Dependent Claim
15 words
The process according to claim 6 wherein said spacers are in the shape of cones.
Claim 9
Dependent Claim
15 words
The process according to claim 6 wherein said spacers are in the shape of cams.
Claim 10
Dependent Claim
16 words
The process according to claim 1 wherein said spherical bodies are wholly embedded within said sheet.
References Cited (Backward Citations)
US3001105A
Cited
US3077638A
Cited
US3195906A
Cited
US3625527A
Cited
US3863937A
Cited
US3983677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |