Patent US3220749A successfully refreshed from Google Patents.
US3220749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch
Assignee: Individual
•
Filing: 1962-11-30
•
Granted: 1965-11-30
•
Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Martin H Mathisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:46
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/30; B60D1/34; B60D1/345
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
169 words
A TRAILER HITCH COMPRISING A V-SHAPED DRAW BAR AND A V-SHAPED TOW BAR, MEANS SECURING THE LEGS OF THE DRAW BAR TO A TOWING VEHICLE AXLE HOUSING, MEANS SECURIN THE LEGS OF THE TOW BAR TO THE TRAILER, AND MEANS PIVOTALLY SECURING THE APEX OF THE TOW BAR TO THE APEX OF THE DRAW BAR, THE MEANS FOR SECURING THE LEGS OF THE DRAW BAR TO THE TOWING VEHICLE AXLE HOUSING COMPRISES AN UPWARDLY AND REARWARDLY EXTENDING HOOK FORMATION ON THE END OF THE LEGS OF THE V, AND A FLEXIBLE MEMBER SECURED TO THE END OF THE HOOK FORMATION AND TO THE UPWARDLY EXTENDING PORTION THEREOF, EACH LEG OF THE V OF THE DRAW BAR COMPRISING SEPARATE ELEMENTS ADJUSTABLY CLAMPED TOGETHER AND SWAY PREVENTINGG MEANS COMPRISING A BAR SECURED TO EACH LEG OF THE TOW BAR AND PIVOTALLY CONNECTED TO THE APEX OF THE TWO BAR, THE PIVOTAL CONNECTION COMPRISING A PAIR OF UPPER AND LOWER SOCKETS AND PINS SECURED TO EACH BAR AND RECEIVED IN SAID SOCKETS.
References Cited (Backward Citations)
US1612191A
Cited
US1286367A
Cited
US1435063A
Cited
US1492491A
Cited
US1541037A
Cited
US1572914A
Cited
DE436748C
Cited
US2485743A
Cited
US2449315A
Cited
US2646289A
Cited
US2828144A
Cited
US2772893A
Cited
US2808272A
Cited
US2817541A
Cited
US2954241A
Cited
US2952475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |