US3401606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internally breathing brake actuator
Assignee: Indian Head Industries Inc
•
Filing: 1966-10-24
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Granted: 1968-09-17
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Expires: 1986-10-24
Abstract
No abstract record available.
Inventors
- 👤 George P Mathews
- 👤 Allen L Gummer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:05
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/08; B60T17/083; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN AN AIR BRAKE ACTUATOR HAVING AN EMERGENCY SECTION HOUSING, AN EMERGENCY PISTON OR DIAPHRAGM IN SAID HOUSING, AND MEANS FOR MOVING SAID PISTON OR DIAPHRAGM TO THEREBY ACTUATE SAID BRAKE IN THE ABSENCE OF SERVICE PRESSURE, THAT IMPROVEMENT WHICH COMPRISES: AN INTAKE PORT DEFINED BY SAID EMERGENCY HOUSING AND DISPOSED REARWARDLY OF THE REARWARD LIMIT OF MOVEMENT OF SAID PISTON OR DIAPHRAGM; AN EXHAUNT PORT DEFINED BY SAID EMERGENCY HOUSING AND DISPOSED FORWARDLY OF THE SAID FORWARD LIMIT OF MOVEMENT OF SAID PISTON OR DIAPHRAGM; A CHANNEL DEFINED BY SAID HOUSING EXTENDING AXIALLY ALONG SAID EMERGENCY SECTION HOUSING FROM SAID INTAKE PORT TO SAID EXHAUST PORT, SAID CHANNEL HAVING A WALL DISPOSED ADJACENT SAID EXHAUST PORT AND BETWEEN SAID EXHAUST PORT AND SAID INTAKE PORT; A COVER PLATE OVER A PORTION OF SAID CHANNEL AND RUNNING FROM SAID INTAKE PORT TO ADJACENT BUT SPACED FROM SAID WALL;
Claim 2
Dependent Claim
148 words
IN AN AIR BRAKE ACTUATOR HAVING AN EMERGENCY SECTION HOUSING, AN EMERGENCY PISTON OR DIAPHRAGM IN SAID HOUSING, AND MEANS FOR MOVING SAID PISTON OR DIAPHRAGM TO THEREBY ACTUATE SAID BRAKE IN THE ABSENCE OF SERVICE PRESSURE, THAT IMPROVEMENT WHICH COMPRISES: AN INTAKE PORT DEFINED BY SAID EMERGENCY HOUSING AND DISPOSED REARWARDLY OF THE REARWARD LIMIT OF MOVEMENT OF SAID PISTON OR DIAPHRAGM; AN EXHAUNT PORT DEFINED BY SAID EMERGENCY HOUSING AND DISPOSED FORWARDLY OF THE SAID FORWARD LIMIT OF MOVEMENT OF SAID PISTON OR DIAPHRAGM; A CHANNEL DEFINED BY SAID HOUSING EXTENDING AXIALLY ALONG SAID EMERGENCY SECTION HOUSING FROM SAID INTAKE PORT TO SAID EXHAUST PORT, SAID CHANNEL HAVING A WALL DISPOSED ADJACENT SAID EXHAUST PORT AND BETWEEN SAID EXHAUST PORT AND SAID INTAKE PORT; A COVER PLATE OVER A PORTION OF SAID CHANNEL AND RUNNING FROM SAID INTAKE PORT TO ADJACENT BUT SPACED FROM SAID WALL;
References Cited (Backward Citations)
US3302530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |