US3640787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing shaped bodies of low specific gravity
Assignee: Individual
•
Filing: 1967-03-17
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Granted: 1972-02-08
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Expires: 1987-03-17
Abstract
Abstract Bodies of low specific gravity produced by coating a mass of roundish hollow granules, such as expanded or swelled polystyrene granules, with a hardenable liquid binder material, mixing the mass of thus coated granules with a pulverulent solid material so as to adhere particles of the solid material to the coating, and hardening the hardenable binder coating, and shaped cellular structures formed by compressing the mass of hardenable binder coated hollow granules having pulverulent material adhering to the coating during or prior to the hardening of the hardenable liquid binder material.
Inventors
- 👤 Rudolf Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C67/00; B29C67/20; B29C67/207; B29C70/00; C; C04; C04B; C04B20/00; C04B20/10; C04B20/12; C04B26/00; C04B26/02; C04B26/10; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/236; E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/20; E04C2/205; F; F16; F16L; F16L59/00; F16L59/14; B29K; B29K2105/00; B29K2105/06; B29K2309/00; B29K2309/08; Y; Y10; Y10S; Y10S264/00; Y10S264/07; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
40 words
A method as defined in claim 1, wherein the mass of shell-covered hollow granules is subjected to an elevated pressure sufficient to reduce the volume of said mass by at least 25 percent during deformation thereof into said shaped body.
Claim 2
Dependent Claim
26 words
A method as defined in claim 1, wherein said roundish hollow granules are foamed particles of plastic material and said hardenable binder material is heat hardenable.
Claim 3
Dependent Claim
16 words
A method as defined in claim 3, wherein said roundish hollow granules are expanded polystyrene granules.
Claim 4
Dependent Claim
16 words
A method as defined in claim 3, wherein said solid pulverulent material is a mineral material.
Claim 5
Dependent Claim
16 words
A method as defined in claim 3, wherein said solid pulverulent material is a metal powder.
Claim 6
Dependent Claim
25 words
A method as defined in claim 3, wherein said hollow foamed granules of plastic material, respectively, have diameters of between about 2 and 8 mm.
Claim 7
Dependent Claim
25 words
A method as defined in claim 3, wherein said particles of pulverulent solid material, respectively, have a size of between about 0.01 and 0.4 mm.
Claim 8
Dependent Claim
29 words
A method as defined in claim 1, wherein said hardening of said hardenable binder material is carried out by blowing hot gas through the mass of shell-covered hollow particles.
Claim 9
Dependent Claim
14 words
A method as defined in claim 9, wherein said hot gas is hot air.
Claim 10
Dependent Claim
30 words
A method as defined in claim 1, and including the step of adhesively adhering a substantially planar cover material to at least a portion of said shaped, coherent cellular body.
Claim 11
Dependent Claim
47 words
A method as defined in claim 1, and including the step of incorporating in said mass of shell-covered hollow granules, prior to subjecting said mass to said elevated pressure, at least one solid body having a specific gravity higher than that of said shaped, coherent cellular body.
Claim 12
Dependent Claim
42 words
A method as defined in claim 1, and including the step of adhering to at least a portion of the surface of said shaped, body, during compression of same and hardening of the hardening binding material thereof, a substantially planar surface layer.
Claim 13
Dependent Claim
16 words
A method as defined in claim 13, wherein said planar layer consists of a sheet material.
Claim 14
Dependent Claim
15 words
A method as defined in claim 14, wherein said sheet material is a metal sheet.
Claim 15
Dependent Claim
17 words
A method as defined in claim 14, wherein said sheet material is a foil of nonmetallic material.
Claim 16
Dependent Claim
35 words
A method as defined in claim 1, and including the step of anchoring and at least partially embedding at least one auxiliary member in the mass of shell-covered hollow granules during compressing of the latter.
Claim 17
Dependent Claim
15 words
A method as defined in claim 17, wherein said auxiliary member is a connecting member.
Claim 18
Dependent Claim
15 words
A method as defined in claim 17, wherein said auxiliary member is a reinforcing member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |