US3139765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power-assisted steering gear for vehicles
Assignee: Individual
•
Filing: 1961-07-14
•
Granted: 1964-07-07
•
Expires: 1981-07-14
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Heacock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:40
CPC Classifications
B; B62; B62D; B62D5/00; B62D5/06; B62D5/20; B62D5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A POWER ASSISTED STEERING GEAR FOR VEHICLES COMPRISING A STEERING BOX HOUSING, A ROTATABLE STEERING COLUMN EXTENDING INTO SAID HOUSING, SAID STEERING COLUMN BEING PROVIDED WITH A THREADED PORTION, A ROCK SHAFT MOUNTED IN SAID HOUSING AND EXTENDING THEREFROM TO OPERATE A STEERING ARM, A FIRST LEVER FIXEDLY MOUNTED ON SAID ROCK SHAFT, SAID FIRST LEVER LYING GENERALLY IN A PLANE INCLUDING SAID STEERING COLUMN, A DOUBLE-ACTING HYDRAULIC CYLINDER AND PISTON MEANS MOUNTED IN SAID HOUSING AND LYING GENERALLY PARALLEL TO SAID STEERING COLUMN, MEANS CONNECTING SAID HYDRAULIC CYLINDER AND PISTON MEANS TO SAID FIRST LEVER WHEREBY SAID FIRST LEVER WILL BE BIASED BY SAID HYDRAULIC CYLINDER AND PISTON MEANS, A LINK, A CONTROL VALVE IN SAID HOUSING OPERABLE BY LINEAL MOVEMENT OF SAID LINK, NUT MEANS MOUNTED ON SAID STEERING COLUMN COOPERATING WITH SAID THREADED PORTION SO AS TO BE MOVED LONGITUDINALLY OF SAID STEERING COLUMN UPON ROTATION OF SAID COLUMN, A SECOND LEVER CONNECTING SAID NUT MEANS TO SAID FIRST LEVER, ONE END OF SAID SECOND LEVER BEING PIVOTED TO SAID FIRST LEVER, AND THE OTHER END OF SAID SECOND LEVER BEING CON-
Claim 2
Dependent Claim
185 words
A POWER ASSISTED STEERING GEAR FOR VEHICLES COMPRISING A STEERING BOX HOUSING, A ROTATABLE STEERING COLUMN EXTENDING INTO SAID HOUSING, SAID STEERING COLUMN BEING PROVIDED WITH A THREADED PORTION, A ROCK SHAFT MOUNTED IN SAID HOUSING AND EXTENDING THEREFROM TO OPERATE A STEERING ARM, A FIRST LEVER FIXEDLY MOUNTED ON SAID ROCK SHAFT, SAID FIRST LEVER LYING GENERALLY IN A PLANE INCLUDING SAID STEERING COLUMN, A DOUBLE-ACTING HYDRAULIC CYLINDER AND PISTON MEANS MOUNTED IN SAID HOUSING AND LYING GENERALLY PARALLEL TO SAID STEERING COLUMN, MEANS CONNECTING SAID HYDRAULIC CYLINDER AND PISTON MEANS TO SAID FIRST LEVER WHEREBY SAID FIRST LEVER WILL BE BIASED BY SAID HYDRAULIC CYLINDER AND PISTON MEANS, A LINK, A CONTROL VALVE IN SAID HOUSING OPERABLE BY LINEAL MOVEMENT OF SAID LINK, NUT MEANS MOUNTED ON SAID STEERING COLUMN COOPERATING WITH SAID THREADED PORTION SO AS TO BE MOVED LONGITUDINALLY OF SAID STEERING COLUMN UPON ROTATION OF SAID COLUMN, A SECOND LEVER CONNECTING SAID NUT MEANS TO SAID FIRST LEVER, ONE END OF SAID SECOND LEVER BEING PIVOTED TO SAID FIRST LEVER, AND THE OTHER END OF SAID SECOND LEVER BEING CON-
References Cited (Backward Citations)
US2682778A
Cited
US2828829A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |