Patent US3237960A successfully refreshed from Google Patents.
US3237960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dolly for camper's trailer
Assignee: Individual
•
Filing: 1964-08-14
•
Granted: 1966-03-01
•
Expires: 1984-08-14
Abstract
No abstract record available.
Inventors
- 👤 Richard K Ziegler
- 👤 Hubert N Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:22
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0857; B62D53/0864; B62D63/00; B62D63/06; B62D63/062; B62D63/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A DETACHABLE DOLLY FOR A TRAILER HAVING A TONGUE ADAPTED FOR CONNECTION TO A TOWING VEHICLE, INCLUDING A CASTER WHEEL UNIT HAVING A PIVOT PIN AT THE UPPER END THEREOF, MEANS FOR PIVOTALLY MOUNTING THE UNIT IN AN EXTENDED POSITION BELOW AN ASSOCIATED TONGUE AND FOR MOUNTING THE UNIT IN A RETRACTED POSITION ABOVE THE TONGUE, SAID MEANS INCLUDING A VERTICAL SLEEVE FOR RECEIVING THE PIVOT PIN WITH THE UNIT IN THE EXTENDED POSITION AND INCLUDING A HORIZONTAL SLEEVE FOR RECEIVING THE PIN WITH THE UNIT IN THE RETRACTED POSITION, AND A RETAINING ROD MEANS FOR HOLDING THE UNIT ON THE TONGUE IN THE RETRACTED POSITION.
Claim 2
Dependent Claim
106 words
A DETACHABLE DOLLY FOR A TRAILER HAVING A TONGUE ADAPTED FOR CONNECTION TO A TOWING VEHICLE, INCLUDING A CASTER WHEEL UNIT HAVING A PIVOT PIN AT THE UPPER END THEREOF, MEANS FOR PIVOTALLY MOUNTING THE UNIT IN AN EXTENDED POSITION BELOW AN ASSOCIATED TONGUE AND FOR MOUNTING THE UNIT IN A RETRACTED POSITION ABOVE THE TONGUE, SAID MEANS INCLUDING A VERTICAL SLEEVE FOR RECEIVING THE PIVOT PIN WITH THE UNIT IN THE EXTENDED POSITION AND INCLUDING A HORIZONTAL SLEEVE FOR RECEIVING THE PIN WITH THE UNIT IN THE RETRACTED POSITION, AND A RETAINING ROD MEANS FOR HOLDING THE UNIT ON THE TONGUE IN THE RETRACTED POSITION.
References Cited (Backward Citations)
US1193052A
Cited
GB510392A
Cited
US2627424A
Cited
FR1082494A
Cited
US2810588A
Cited
US2954963A
Cited
US2962298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |