US3090359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double air chamber brake cylinder
Assignee: TRANSP IND Inc
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Filing: 1960-12-05
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Granted: 1963-05-21
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Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Hoppenstand David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:59
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/10; B60T17/083; B60T17/085; B60T17/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
198 words
A BREAK-ACTUATING FLUID-OPERATED MOTOR COMPRISING A FIRST HOUSING CLOSED AT BOTH ENDS, A FIRST DIAPHRAGM DISPOSED ACROSS THE FIRST HOUSING INTERMEDIATE ITS ENDS, A SECOND HOUSING CLOSED AT ONE END POSITIONED WITH ITS CLOSED END ADJACENT TO AN END OF THE FIRST HOUSING, THE FIRST AND SECOND HOUSINGS BEING MOVABLE WITH RESPECT TO EACH OTHER, A SECOND DIAPHRAGM DISPOSED ACROSS THE SECOND HOUSING INTERMEDIATE ITS ENDS, A FIRST PUSH PLATE DISPOSED AGAINST THE FIRST DIAPHRAGM, A PUSH ROD ATTACHED AT ONE END TO THE FIRST PUSH PLATE AND EXTENDING THROUGH THE ADJACENT ENDS OF THE FIRST AND SECOND HOUSINGS, A SECOND PUSH PLATE ATTACHED TO THE PUSH ROD AT ITS OTHER END AND POSITIONED BETWEEN THE CLOSED END OF THE SECOND HOUSING AND THE SECOND DIAPHRAGM, A THIRD PUSH PLATE DISPOSED AGAINST THE OTHER SIDE OF THE SECOND DIAPHRAGM, A BRAKE OPERATING ROD ATTACHED TO THE THIRD PLATE, MEANS FOR INTRODUCING FLUID ENDER PRESSURE INTO THE SECOND HOUSING ONLY SO AS TO FLEX THE SECOND DIAPHRAGM AND THEREBY MOVE THE BRAKE OPERATING ROD, AND MEANS FOR INTRODUCING FLUID UNDER PRESSURE INTO THE FIRST HOUSING ONLY SO AS TO FLEX THE FIRST DIAPHRAGM AND THEREBY MOVE THE PUSH ROD.
Claim 2
Dependent Claim
198 words
A BREAK-ACTUATING FLUID-OPERATED MOTOR COMPRISING A FIRST HOUSING CLOSED AT BOTH ENDS, A FIRST DIAPHRAGM DISPOSED ACROSS THE FIRST HOUSING INTERMEDIATE ITS ENDS, A SECOND HOUSING CLOSED AT ONE END POSITIONED WITH ITS CLOSED END ADJACENT TO AN END OF THE FIRST HOUSING, THE FIRST AND SECOND HOUSINGS BEING MOVABLE WITH RESPECT TO EACH OTHER, A SECOND DIAPHRAGM DISPOSED ACROSS THE SECOND HOUSING INTERMEDIATE ITS ENDS, A FIRST PUSH PLATE DISPOSED AGAINST THE FIRST DIAPHRAGM, A PUSH ROD ATTACHED AT ONE END TO THE FIRST PUSH PLATE AND EXTENDING THROUGH THE ADJACENT ENDS OF THE FIRST AND SECOND HOUSINGS, A SECOND PUSH PLATE ATTACHED TO THE PUSH ROD AT ITS OTHER END AND POSITIONED BETWEEN THE CLOSED END OF THE SECOND HOUSING AND THE SECOND DIAPHRAGM, A THIRD PUSH PLATE DISPOSED AGAINST THE OTHER SIDE OF THE SECOND DIAPHRAGM, A BRAKE OPERATING ROD ATTACHED TO THE THIRD PLATE, MEANS FOR INTRODUCING FLUID ENDER PRESSURE INTO THE SECOND HOUSING ONLY SO AS TO FLEX THE SECOND DIAPHRAGM AND THEREBY MOVE THE BRAKE OPERATING ROD, AND MEANS FOR INTRODUCING FLUID UNDER PRESSURE INTO THE FIRST HOUSING ONLY SO AS TO FLEX THE FIRST DIAPHRAGM AND THEREBY MOVE THE PUSH ROD.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |