Patent US3073419A successfully refreshed from Google Patents.
US3073419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brakes for trailer vehicles
Assignee: Individual
•
Filing: 1958-09-08
•
Granted: 1963-01-15
•
Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Henry Howarth Padgett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:19
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/12; B60T7/20; B60T11/00; B60T11/10; B60T11/107
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A TRACTOR-DRAWN TRAILER BRAKING DEVICE CONSISTING ESSENTIALLY OF A TRAILER WHEEL-CARRIED BRAKE DRUM RIGIDLY AFFIXED TO AND ROTATABLE WITH SAID TRAILER WHEEL IN A FORWARD SENSE WITH THE FORWARD ROTATION OF SAID WHEEL, A BRAKE SHOE SYSTEM ASSOCIATED WITH SAID BRAKE DRUM AND INCLUDING AT LEAST ONE ARCUATE BRAKE SHOE HAVING A FACE EXTENDING PERIPHERALLY ALONG AND CONFRONTING THE PERIPHERAL SURFACE OF SAID DRUM, A SUBSTANTIALLY STATIONARY HINGE MEMBER ENGAGING THE BRAKE SHOE OF SAID BRAKE SHOE SYSTEM ADJACENT THE TRAILING END THEREOF RELATIVE TO THE FORWARD ROTATION OF SAID DRUM, AND A BRAKE-ACTUATING MECHANISM RESPONSIVE TO THE APPROACH BETWEEN SAID TRAILER AND TRACTOR AND COUPLED TO SAID BRAKE DRUM ONLY THROUGH
Claim 2
Dependent Claim
112 words
A TRACTOR-DRAWN TRAILER BRAKING DEVICE CONSISTING ESSENTIALLY OF A TRAILER WHEEL-CARRIED BRAKE DRUM RIGIDLY AFFIXED TO AND ROTATABLE WITH SAID TRAILER WHEEL IN A FORWARD SENSE WITH THE FORWARD ROTATION OF SAID WHEEL, A BRAKE SHOE SYSTEM ASSOCIATED WITH SAID BRAKE DRUM AND INCLUDING AT LEAST ONE ARCUATE BRAKE SHOE HAVING A FACE EXTENDING PERIPHERALLY ALONG AND CONFRONTING THE PERIPHERAL SURFACE OF SAID DRUM, A SUBSTANTIALLY STATIONARY HINGE MEMBER ENGAGING THE BRAKE SHOE OF SAID BRAKE SHOE SYSTEM ADJACENT THE TRAILING END THEREOF RELATIVE TO THE FORWARD ROTATION OF SAID DRUM, AND A BRAKE-ACTUATING MECHANISM RESPONSIVE TO THE APPROACH BETWEEN SAID TRAILER AND TRACTOR AND COUPLED TO SAID BRAKE DRUM ONLY THROUGH
References Cited (Backward Citations)
US1921161A
Cited
US1966670A
Cited
US2221929A
Cited
US2294329A
Cited
US2741335A
Cited
DE922922C
Cited
US2737265A
Cited
US2973062A
Cited
US2973839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |