Patent US3788673A successfully refreshed from Google Patents.
US3788673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hitch
Assignee: Individual
•
Filing: 1972-07-11
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Granted: 1974-01-29
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Expires: 1992-07-11
Abstract
Abstract A gooseneck trailer hitch including a vertically positioned tubular member attached to the trailer with a bearing edge at its open end for receipt of a cone-shaped hitch member rotatably mounted on a truck bed having a load bearing flange around the bottom thereof for supporting the bearing edge of the tubular member and a loosely fitting locking pin passing through both the tubular member and cone-shaped hitch member allowing a certain degree of tilt between the tubular member and hitch member.
Inventors
- 👤 L Gloege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:09
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0807; B62D53/0828; Y; Y10; Y10S; Y10S280/00; Y10S280/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
175 words
A trailer hitch coupling for use on a gooseneck trailer and pickup truck comprising: a vertically positioned tubular member extending downwardly from the trailer, having a plAnar bearing edge at its open end; a lateral hole in the tubular member approximate the open end; a cone-shaped hitch member having a lateral opening therein, the hitch member being shaped for receipt in the open end of the tubular member; a load bearing flange extending outwardly from the bottom of the cone for mating support of the bearing edge of the tubular member; mounting means attaching the hitch member to the bed of the pickup truck for rotatable movement about a vertical axis; and a removable locking pin means receivable in the lateral hole in the tubular member, and the lateral opening in the hitch member for locking the hitch coupling together, the diameter of the lateral opening in the hitch member being sufficiently larger than the diameter of the locking pin means to allow the tubular member of the hitch to tilt on the cone-shaped member.
Claim 2
Dependent Claim
175 words
A trailer hitch coupling for use on a gooseneck trailer and pickup truck comprising: a vertically positioned tubular member extending downwardly from the trailer, having a plAnar bearing edge at its open end; a lateral hole in the tubular member approximate the open end; a cone-shaped hitch member having a lateral opening therein, the hitch member being shaped for receipt in the open end of the tubular member; a load bearing flange extending outwardly from the bottom of the cone for mating support of the bearing edge of the tubular member; mounting means attaching the hitch member to the bed of the pickup truck for rotatable movement about a vertical axis; and a removable locking pin means receivable in the lateral hole in the tubular member, and the lateral opening in the hitch member for locking the hitch coupling together, the diameter of the lateral opening in the hitch member being sufficiently larger than the diameter of the locking pin means to allow the tubular member of the hitch to tilt on the cone-shaped member.
Claim 3
Dependent Claim
26 words
A trailer hitch coupling as set forth in claim 1, wherein the mounting means is a swivel connection allowing the hitch member to freely rotate thereon.
Claim 4
Dependent Claim
36 words
A trailer hitch coupling as set forth in claim 1, wherein the mounting means is an integrally formed threaded boss extending downwardly from the load bearing flange and a removable nut threadably received on said boss.
Claim 5
Dependent Claim
34 words
A trailer hitch coupling as set forth in claim 1, wherein the inside diameter of the tubular member being substantially equal to the diameter of the hitch member at the bottom of the cone.
Claim 6
Dependent Claim
39 words
A trailer hitch coupling as set forth in claim 1, including a flat lubricated bearing surface anchored to the bed of the truck positioned beneath the load bearing flange whereby the hitch member is allowed to freely rotate thereon.
Claim 7
Dependent Claim
51 words
A trailer hitch coupling as set forth in claim 1, wherein the diameter of the lateral opening in the hitch member is at least twice the diameter of the locking pin means to allow the tubular member to tilt on the cone-shaped hitch member while the hitch coupling is locked together.
Claim 8
Dependent Claim
69 words
A trailer hitch coupling as set forth in claim 1, wherein the diameter of the lateral opening in the hitch member is at least twice the diameter of the locking pin means and the lateral hole in the tubular member is concentrically positioned with respect to the lateral opening in the hitch member when the bearing edge of the tubular member is in contact with the load bearing flange.
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |