Patent US3307857A successfully refreshed from Google Patents.
US3307857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball hitch construction
Assignee: CLYDE VINSON
•
Filing: 1966-06-14
•
Granted: 1967-03-07
•
Expires: 1986-06-14
Abstract
No abstract record available.
Inventors
- 👤 Jesse E Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:17
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/06; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/51; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/4588; Y10T24/45942; Y10T403/00; Y10T403/32; Y10T403/32606; Y10T403/32631
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN A BALL HITCH CONSTRUCTION HAVING A MALE HITCH MEMBER CARRIED BY A FIRST HITCH ELEMENT AND A FEMALE HITCH MEMBER CARRIED BY A SECOND ELEMENT AND ENGAGEABLE OVER SAID MALE HITCH MEMBER REMOVABLY TO SECURE SAID FIRST AND SECOND ELEMENTS TO EACH OTHER, SAID MALE HITCH MEMBER INCLUDING A STEM ELEMENT HAVING A SHANK PORTION AT ONE END AND A FRUSTO-CONICAL PORTION AT ITS OPPOSITE END, SAID FRUSTO-CONICAL PORTION TAPERING TO AN ENLARGED END REMOTE FROM SAID SHANK PORTION, MEANS TO SECURE SAID SHANK PORTION OF SAID STEM ELEMENT TO SAID FIRST ELEMENT, A PLURALITY OF SEGMENTAL ELEMENTS HAVING BULBOUS PORTIONS TOGETHER DEFINING A BALL, AND MEANS TO SECURE SAID SEGMENTAL ELEMENTS TO SAID STEM ELEMENT AT A SELECTED POSITION ON SAID FRUSTO-CONICAL PORTION WHEREBY THE EFFECTIVE SIZE OF SAID BALL MAY BE VARIED.
Claim 2
Dependent Claim
135 words
IN A BALL HITCH CONSTRUCTION HAVING A MALE HITCH MEMBER CARRIED BY A FIRST HITCH ELEMENT AND A FEMALE HITCH MEMBER CARRIED BY A SECOND ELEMENT AND ENGAGEABLE OVER SAID MALE HITCH MEMBER REMOVABLY TO SECURE SAID FIRST AND SECOND ELEMENTS TO EACH OTHER, SAID MALE HITCH MEMBER INCLUDING A STEM ELEMENT HAVING A SHANK PORTION AT ONE END AND A FRUSTO-CONICAL PORTION AT ITS OPPOSITE END, SAID FRUSTO-CONICAL PORTION TAPERING TO AN ENLARGED END REMOTE FROM SAID SHANK PORTION, MEANS TO SECURE SAID SHANK PORTION OF SAID STEM ELEMENT TO SAID FIRST ELEMENT, A PLURALITY OF SEGMENTAL ELEMENTS HAVING BULBOUS PORTIONS TOGETHER DEFINING A BALL, AND MEANS TO SECURE SAID SEGMENTAL ELEMENTS TO SAID STEM ELEMENT AT A SELECTED POSITION ON SAID FRUSTO-CONICAL PORTION WHEREBY THE EFFECTIVE SIZE OF SAID BALL MAY BE VARIED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |