US4069284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-vibration heat-insulation structure and a process for production thereof
Assignee: Toyota Motor Corp
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Filing: 1973-01-22
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Granted: 1978-01-17
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Expires: 1993-01-22
Abstract
Abstract The present invention relates to an anti-vibration heat-insulation structure and a process for the production thereof characterized by filling the void in the structure to form a heat-insulation layer with silicic acid bonding agent-coated silicic acid mineral grains which swell in volume when fired at a high temperature; and then heating and thereby expanding these silicic acid mineral grains and at the same time allowing said grains to stick to one another.
Inventors
- 👤 Itaru Niimi
- 👤 Yasuhisa Kaneko
- 👤 Fumiyoshi Noda
- 👤 Yuji Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:31
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; F; F01; F01N; F01N13/00; F01N13/14; F01N13/141; F01N13/16; F16; F16L; F16L59/00; F16L59/02; F16L59/028; F01N13/08; F01N13/10; F01N2240/00; F01N2240/12; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; Y; Y10; Y10S; Y10S106/00; Y10S106/02; Y10S106/03; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/249969
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
55 words
A process of manufacturing a vibration resistant heat insulator comprising, coating foamable silicic acid mineral grains with a bonding agent, charging said coated mineral grains into a space between two spaced walls, and heating said coated mineral grains until they are expanded and bonded together by said bonding agent which strengthens the expanded mineral grains.
Claim 2
Dependent Claim
55 words
A process of manufacturing a vibration resistant heat insulator comprising, coating foamable silicic acid mineral grains with a bonding agent, charging said coated mineral grains into a space between two spaced walls, and heating said coated mineral grains until they are expanded and bonded together by said bonding agent which strengthens the expanded mineral grains.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said silicic acid mineral grains comprises a member selected from a group consisting of vermiculite, perlite and black lava glass.
Claim 4
Dependent Claim
28 words
The process of claim 1 wherein said bonding agent comprises a member selected from a group consisting of colloidal silica, water glass and a ternary mineral of alumina-silica-zirconia.
Claim 5
Dependent Claim
33 words
The process of claim 1 wherein said coating step further comprises mixing silicic acid mineral grains and bonding agent, agitating said mixture and screening said mixture to thereby remove the excess bonding agent.
Claim 6
Dependent Claim
29 words
The process of claim 1 wherein the coated mineral grains are heated to a temperature of from 1000° to 1200° C. until the grains are expanded and bound together.
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) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |