US4773667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proximity hitch
Assignee: Individual
•
Filing: 1987-04-30
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Granted: 1988-09-27
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Expires: 2007-04-30
Abstract
Abstract A proximity hitch can be fitted to a towed vehicle, as for example a trailer, so that the trailer can be towed by a towing vehicle. The hitch comprises opposed main frame members which terminate in a flat mounted plate. A guide member is pivotally attached to the mounted plate and reciprocatingly receives a tongue therethrough. The tongue has a socket formed at one end thereof and a cam follower at the other end thereof. Opposed cam plates have confronting cam surfaces formed thereon with there being a notch formed between the cam surfaces. The cam follower is received within the cam notch when the proximity hitch is retracted. The cam follower rides against the cam surface as the socket is moved over a wide area of movement. The tongue and guide member are latched into a retracted position when the trailer is to be towed and unlatched when it is necessary to connect the trailer to the towing vehicle.
Inventors
- 👤 Johnny C. Elkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:42
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/40; B60D1/01; B60D1/06; B60D1/14; B60D1/167; B60D1/1675
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
271 words
A proximity hitch by which a towed vehicle can be releasably connected to a towing vehicle; said hitch comprises opposed main frame members connected at a rear end thereof to the towed vehicle and terminating in a socket at a forward end thereof; a horizontal fixed bearing plate attached to a forward marginal end of said main frame members; a guide member attached to a pivotal bearing plate by pivot means by which said guide member is pivotally attached to said fixed bearing plate, an elongated, unitary tongue telescopingly received by said guide member; means reciprocating said tongue respective to said guide member; said tongue has a cam follower at a rear end thereof with said socket being mounted at the forward end thereof; said pivot means is a pivot bolt that extends through said guide member, pivotal bearing plate, and fixed bearing plate; an elongated slot vertically arranged through a medial length of the tongue which receives said pivot bolt therethrough so that said tongue slides within the confines of the opposed ends of the slot while the pivotal bearing plate, guide member, and tongue are pivoted about said pivot bolt; a cam plate attached to said opposed main frame members and having opposed cam surfaces formed thereon against which said cam follower is received such that the cam follower describes a large loop as the socket is moved from a rear position to a forward position respective to the forward end of the main frame; latch means by which the tongue is releasably affixed to said guide member by which said cam follower is locked within said cam plate.
Claim 2
Dependent Claim
271 words
A proximity hitch by which a towed vehicle can be releasably connected to a towing vehicle; said hitch comprises opposed main frame members connected at a rear end thereof to the towed vehicle and terminating in a socket at a forward end thereof; a horizontal fixed bearing plate attached to a forward marginal end of said main frame members; a guide member attached to a pivotal bearing plate by pivot means by which said guide member is pivotally attached to said fixed bearing plate, an elongated, unitary tongue telescopingly received by said guide member; means reciprocating said tongue respective to said guide member; said tongue has a cam follower at a rear end thereof with said socket being mounted at the forward end thereof; said pivot means is a pivot bolt that extends through said guide member, pivotal bearing plate, and fixed bearing plate; an elongated slot vertically arranged through a medial length of the tongue which receives said pivot bolt therethrough so that said tongue slides within the confines of the opposed ends of the slot while the pivotal bearing plate, guide member, and tongue are pivoted about said pivot bolt; a cam plate attached to said opposed main frame members and having opposed cam surfaces formed thereon against which said cam follower is received such that the cam follower describes a large loop as the socket is moved from a rear position to a forward position respective to the forward end of the main frame; latch means by which the tongue is releasably affixed to said guide member by which said cam follower is locked within said cam plate.
Claim 3
Dependent Claim
55 words
The hitch of claim 1 wherein said means for reciprocating said tongue includes a screw jack means connected between the cam end of the tongue and the guide member; whereby the cam end of the tongue is moved by the jack means and forced to move in a telescoping manner respective to the guide member.
Claim 4
Dependent Claim
43 words
The hitch of claim 1 wherein said means for reciprocating said tongue includes a cable, winch means for moving said cable, a free end of said cable is connected to the rear end of said tongue and arranged to force the tongue rearward.
Claim 5
Dependent Claim
31 words
The hitch of claim 1 wherein splice plates are arranged at the rear of the hitch by which the hitch can be removably bolted to the forward end of a trailer.
Claim 6
Dependent Claim
257 words
A hitch apparatus by which a towed vehicle can be releasably connected to a towing vehicle; said hitch apparatus has a forward end opposed to a rear end, said hitch apparatus comprises opposed main frame members connected at the rear end to the towed vehicle and terminating in a socket at the forward end thereof; a bearing plate attached in a horizontal position to said main frame members; guide means pivotally attached to said bearing plate, a tongue telescopingly received by said guide means, whereby said tongue means can reciprocate respective to said guide means; said tongue means has a cam follower at a rear end thereof with said socket being mounted at the forward end thereof; a cam plate attached to said main frame members at a location rearwardly of said bearing plate and having opposed cam surfaces formed thereon against which said cam follower is received such that the cam follower describes a large loop as the socket is moved from a rear position to a forward position respective to the forward end of the main frame members; latch means by which the tongue is releasably affixed to said guide means and said bearing plate; and, means by which said cam follower is locked within said cam plate; said guide means includes a pivot plate, a vertical pivot means by which the bearing plate and pivot plate pivotally abut one another in a slidable manner; said guide means includes an elongated housing affixed to said pivot plate; said tongue is reciprocatingly received within said housing.
Claim 7
Dependent Claim
257 words
A hitch apparatus by which a towed vehicle can be releasably connected to a towing vehicle; said hitch apparatus has a forward end opposed to a rear end, said hitch apparatus comprises opposed main frame members connected at the rear end to the towed vehicle and terminating in a socket at the forward end thereof; a bearing plate attached in a horizontal position to said main frame members; guide means pivotally attached to said bearing plate, a tongue telescopingly received by said guide means, whereby said tongue means can reciprocate respective to said guide means; said tongue means has a cam follower at a rear end thereof with said socket being mounted at the forward end thereof; a cam plate attached to said main frame members at a location rearwardly of said bearing plate and having opposed cam surfaces formed thereon against which said cam follower is received such that the cam follower describes a large loop as the socket is moved from a rear position to a forward position respective to the forward end of the main frame members; latch means by which the tongue is releasably affixed to said guide means and said bearing plate; and, means by which said cam follower is locked within said cam plate; said guide means includes a pivot plate, a vertical pivot means by which the bearing plate and pivot plate pivotally abut one another in a slidable manner; said guide means includes an elongated housing affixed to said pivot plate; said tongue is reciprocatingly received within said housing.
Claim 8
Dependent Claim
57 words
The hitch of claim 5 and further including means for reciprocating said tongue including a screw jack means connected between the cam end of the tongue and the guide means; whereby the cam end of the tongue is moved by the screw jack means and forced to move in a telescoping manner respective to the guide means.
Claim 9
Dependent Claim
45 words
The hitch of claim 5 and further including a means for reciprocating said tongue including a cable, winch means for moving said cable, a free end of said cable is connected to the rear end of said tongue and arranged to force the tongue rearward.
Claim 10
Dependent Claim
31 words
The hitch of claim 5 wherein splice plates are arranged at the rear of the hitch by which the hitch can be removably bolted to the forward end of a trailer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |