Patent US5011177A successfully refreshed from Google Patents.
US5011177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary trailer extension tongue
Assignee: Individual
•
Filing: 1990-02-26
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Granted: 1991-04-30
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Expires: 2010-02-26
Abstract
Abstract An accessory kit is disclosed for extending the length of the tongue for a trailer, particularly a boat trailer. The kit includes telescoping related members, a tubular member detachably mounted on the tongue, a gear rack selectively movable therein, and a gear drive device mounted on the tubular member and operatively engaged with the teeth of the gear rack. A hitch ball is secured to the tubular member for detachably supporting the ball hitch of the trailer while a ball hitch is secured to the outer, extendable end of the gear rack for connection to a trailing vehicle, thereby substituting for the ball hitch of the trailer. In another embodiment, a d.c. motor is mounted in the tubular member for driving the gear device for permitting the extension and retraction of the gear rack from a remote position. Operation of the d.c. motor may be by a remote control device.
Inventors
- 👤 Farrell Grice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:02
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/40; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/1083
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
256 words
An auxiliary trailer extension kit adapted to be operatively and detachably interconnected between a trailer tongue of a conventional trailer having a ball-type hitch at one end thereof, and a conventional swivel hitch ball mounted on a trailing vehicle, said auxiliary trailer extension kit comprising: an elongated tubular member adapted to be detachably secured to the trailer tongue; releasable attachment means secured to said elongated tubular member for detachably interconnecting said elongated tubular member in a fixed relationship with the trailer tongue; a conventional swivel hitch ball mounted on the top surface of said elongated tubular member and upon which the ball-type hitch of the conventional trailer is adapted to be applied; an elongated extension member adapted for telescoping relative said elongated tubular member, said extension member comprising an upturned toothed gear rack journaled in said elongated tubular member and having a ball-type hitch attached adjacent one end thereof for application to a conventional swivel hitch ball mounted on a trailing vehicle; and drive means for selectively alternately extending and retracting said extension member relative to said elongated tubular member for effecting controlled elongation of the trailer tongue, said drive means including a housing received on the distal end of said elongated tubular member at an upper surface thereof and having a relatively enlarged gear rotatably supported in said housing and engaged with said upturned toothed gear rack through an opening therein, so that controlled rotation of said relatively enlarged gear results in corresponding controlled relative movement between said extension member and said elongated tubular member.
Claim 2
Dependent Claim
256 words
An auxiliary trailer extension kit adapted to be operatively and detachably interconnected between a trailer tongue of a conventional trailer having a ball-type hitch at one end thereof, and a conventional swivel hitch ball mounted on a trailing vehicle, said auxiliary trailer extension kit comprising: an elongated tubular member adapted to be detachably secured to the trailer tongue; releasable attachment means secured to said elongated tubular member for detachably interconnecting said elongated tubular member in a fixed relationship with the trailer tongue; a conventional swivel hitch ball mounted on the top surface of said elongated tubular member and upon which the ball-type hitch of the conventional trailer is adapted to be applied; an elongated extension member adapted for telescoping relative said elongated tubular member, said extension member comprising an upturned toothed gear rack journaled in said elongated tubular member and having a ball-type hitch attached adjacent one end thereof for application to a conventional swivel hitch ball mounted on a trailing vehicle; and drive means for selectively alternately extending and retracting said extension member relative to said elongated tubular member for effecting controlled elongation of the trailer tongue, said drive means including a housing received on the distal end of said elongated tubular member at an upper surface thereof and having a relatively enlarged gear rotatably supported in said housing and engaged with said upturned toothed gear rack through an opening therein, so that controlled rotation of said relatively enlarged gear results in corresponding controlled relative movement between said extension member and said elongated tubular member.
Claim 3
Dependent Claim
28 words
The trailer extension kit defined in claim 1 wherein said drive means for alternately extending and retracting said extension member comprises a manually operable, hand crank gear device.
Claim 4
Dependent Claim
32 words
The trailer extension kit defined in claim 1 wherein said tubular member is rectangular in cross-section and said extension member is in telescoping relation therewith within the interior of said tubular member.
Claim 5
Dependent Claim
25 words
The trailer extension kit defined in claim 3, further including a locking device adapted to lock said extension and tubular members against inadvertent relative movement.
Claim 6
Dependent Claim
23 words
The trailer extension kit defined in claim 1 wherein said drive means for extending and retracting said extension member includes an electric motor.
Claim 7
Dependent Claim
41 words
The trailer extension kit defined in claim 5, further including remote control means for permitting operator remote control of said electric motor, so that such operation may be performed by an operator situated in a desired position of safety and vantage.
Claim 8
Dependent Claim
61 words
The trailer extension kit defined in claim 1, wherein said conventional swivel hitch ball is situated relatively adjacent said drive means for extending and retracting said extension member which is positioned on said elongated tubular member distal end, thereby permitting overlap between a trailer tongue with which said kit is used and more than half of said tubular member entire length.
Claim 9
Dependent Claim
48 words
The trailer extension kit defined in claim 1, further including: motor drive means, operative with said drive means for extending and retracting for actuating such drive means; and remote control means, operative with said motor drive means, for remote controlling of such motor drive means by an operator.
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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) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |