Patent US3345245A successfully refreshed from Google Patents.
US3345245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite structure having shock absorbing properties
Assignee: Stauffer Chemical Co
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Filing: 1960-09-26
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Granted: 1967-10-03
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Expires: 1980-09-26
Abstract
No abstract record available.
Inventors
- 👤 Hanusa Helmut George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:53
CPC Classifications
F; F16; F16F; F16F3/00; F16F3/08; F16F3/10; F16F3/12; B; B32; B32B; B32B27/00; E; E04; E04F; E04F15/00; E04F15/22; Y; Y10; Y10S; Y10S138/00; Y10S138/09; Y10S229/00; Y10S229/939; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24488; Y10T428/24496; Y10T428/24504; Y10T428/24512; Y10T428/24521; Y10T428/24529; Y10T428/24595; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/24942; Y10T428/24992; Y10T428/249921; Y10T428/249953; Y10T428/249981; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A COMPOSITE STRUCTURE HAVING SHOCK ABSORBING PROPERTIES COMPRISING; A BASE OF A RELATIVELY NON-RESILENT CORRUGATED SHEET HAVING SUBSTANTIALLY ITS ENTIRE CORRUGATED SURFACE IN DIRECT, ADHERING INTERFACIAL CONTACT WITH AN INTEGRAL SHEET OF RELATIVELY RESILIENT FOAMED IN PLACE CELLULAR POLYURETHANE; SAID POLYURETHANE HAVING DISTINCT, STRATIFIED LAYES OF VARYING DENSITIES, THE POLYURETHANE WITHIN THE VALLEYS OF THE CORRUGATED SHEET BEING RELATIVELY LOW DENSITY RIDGES THAT EXTEND FROM THE BASE SHEET TO AN UNINTERRUPTED LAYER OF RELATIVELY HIGH DENSITY POLYURETHANE, WHICH IN TURN EXTENDS TO A LAYER OF POLYURETHANE HAVING RELATIVELY INTERMEDIATE DENSITY; THE HEIGHT OF THE POLYURETHANE RIDGES AT SAID INTERFACIAL CONTACT BEING NOT MORE THAN ABOUT 3/4 INCH AND THE DISTANCE BETWEEN POLYRETHANE CRESTS AT SAID INTERFACIAL CONTACT BEING NOT MORE THAN ABOUT 1/2 INCH.
Claim 2
Dependent Claim
124 words
A COMPOSITE STRUCTURE HAVING SHOCK ABSORBING PROPERTIES COMPRISING; A BASE OF A RELATIVELY NON-RESILENT CORRUGATED SHEET HAVING SUBSTANTIALLY ITS ENTIRE CORRUGATED SURFACE IN DIRECT, ADHERING INTERFACIAL CONTACT WITH AN INTEGRAL SHEET OF RELATIVELY RESILIENT FOAMED IN PLACE CELLULAR POLYURETHANE; SAID POLYURETHANE HAVING DISTINCT, STRATIFIED LAYES OF VARYING DENSITIES, THE POLYURETHANE WITHIN THE VALLEYS OF THE CORRUGATED SHEET BEING RELATIVELY LOW DENSITY RIDGES THAT EXTEND FROM THE BASE SHEET TO AN UNINTERRUPTED LAYER OF RELATIVELY HIGH DENSITY POLYURETHANE, WHICH IN TURN EXTENDS TO A LAYER OF POLYURETHANE HAVING RELATIVELY INTERMEDIATE DENSITY; THE HEIGHT OF THE POLYURETHANE RIDGES AT SAID INTERFACIAL CONTACT BEING NOT MORE THAN ABOUT 3/4 INCH AND THE DISTANCE BETWEEN POLYRETHANE CRESTS AT SAID INTERFACIAL CONTACT BEING NOT MORE THAN ABOUT 1/2 INCH.
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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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |