US3150781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High capacity draft gear
Assignee: Cardwell Westinghouse Co
•
Filing: 1960-12-27
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Granted: 1964-09-29
•
Expires: 1980-12-27
Abstract
No abstract record available.
Inventors
- 👤 Richard J Housman
- 👤 Eldred H Natschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
B; B61; B61G; B61G9/00; B61G9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A DRAFT GEAR FOR MOUNTING IN THE DRAFT POCKET OF A RAILWAY CAR FRAME, SAID POCKET HAVING FRONT AND REAR STOPS, SAID GEAR INCLUDING HOUSING STRUCTURE OF A LENGTH SUBSTANTIALLY LESS THAN THE DISTANCE BETWEEN SAID STOPS DISPOSED IN SAID POCKET FOR MOVEMENT LENGTHWISE THEREIN, SAID STRUCTURE HAVING AN INTERMEDIATE ABUTMENT WALL AND ENDWISE OPENING FRONT AND REAR CHAMBERS ON OPPOSITE SIDES OF SAID ABUTMENT WALL, A FIRST SELF-RESTORING CUSHIONING UNIT OF A HYDRAULIC FLUID THROTTLING TYPE MOUNTED IN SAID FRONT CHAMBER TO REACT AGAINST SAID ABUTMENT WALL AND A SECOND SELF-RESTORING CUSHIONING UNIT OF A POSITIVE RESISTANCE TYPE MOUNTED IN SAID REAR CHAMBER UNDER PREDETERMINED COMPRESSION TO REACT BETWEEN SAID ABUTMENT WALL AND SAID REAR STOPS AND NORMALLY BIAS SAID HOUSING STRUCTURE AGAINST SAID FRONT STOPS FOR CONFINING DRAFT LOADS TO SAID SECOND CUSHIONING UNIT.
Claim 2
Dependent Claim
136 words
A DRAFT GEAR FOR MOUNTING IN THE DRAFT POCKET OF A RAILWAY CAR FRAME, SAID POCKET HAVING FRONT AND REAR STOPS, SAID GEAR INCLUDING HOUSING STRUCTURE OF A LENGTH SUBSTANTIALLY LESS THAN THE DISTANCE BETWEEN SAID STOPS DISPOSED IN SAID POCKET FOR MOVEMENT LENGTHWISE THEREIN, SAID STRUCTURE HAVING AN INTERMEDIATE ABUTMENT WALL AND ENDWISE OPENING FRONT AND REAR CHAMBERS ON OPPOSITE SIDES OF SAID ABUTMENT WALL, A FIRST SELF-RESTORING CUSHIONING UNIT OF A HYDRAULIC FLUID THROTTLING TYPE MOUNTED IN SAID FRONT CHAMBER TO REACT AGAINST SAID ABUTMENT WALL AND A SECOND SELF-RESTORING CUSHIONING UNIT OF A POSITIVE RESISTANCE TYPE MOUNTED IN SAID REAR CHAMBER UNDER PREDETERMINED COMPRESSION TO REACT BETWEEN SAID ABUTMENT WALL AND SAID REAR STOPS AND NORMALLY BIAS SAID HOUSING STRUCTURE AGAINST SAID FRONT STOPS FOR CONFINING DRAFT LOADS TO SAID SECOND CUSHIONING UNIT.
References Cited (Backward Citations)
GB303141A
Cited
GB384642A
Cited
US2208338A
Cited
GB695109A
Cited
US2816670A
Cited
US2915198A
Cited
US2825472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |