US4621432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer hook-up guide system
Assignee: Individual
•
Filing: 1985-06-27
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Granted: 1986-11-11
•
Expires: 2005-06-27
Abstract
Abstract The invention relates to improvements in trailer alignment and hook-up systems which are used with conventional hitching and hitch elements. The system comprises a fork-like sighting member attached to the towing vehicle and a flexible sighting pole assembly attached to the trailer hitch. The vehicles are properly aligned when the hitching element bumps the base or tail of the sighting pole causing it to vibrate while being viewed within the fork-like sighting member.
Inventors
- 👤 Thomas Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:13
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/36
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
180 words
Guide system for aligning and hooking-up a towing vehicle having a hitching element to a towed vehicle having a hitch element comprising a fork-like sighting member attached to the rear of the towing vehicle above said hitching element and in vertical alignment therewith and a flexible sighting pole assembly adjustably attached to the towed vehicle, said assembly including a vertical sighting pole having a lower end and a longitudinal axis, an offset U-shaped member attached to the lower end of said vertical sighting pole, a tail section extending from said U-shaped member along said longitudinal axis on a side of the U-shaped member opposite the vertical sighting pole, said U-shaped member being positioned to extend around said hitch element, with the tail section below the hitch element so that said longitudinal axis extends substantially vertically through the hitch element, whereby when aligning said hitching element and said hitch element for hook-up, said hitching element bumps said tail section causing the vertical sighting pole to vibrate and thereby provide an indication of proper alignment when viewed through said fork-like sighting member.
Claim 2
Dependent Claim
180 words
Guide system for aligning and hooking-up a towing vehicle having a hitching element to a towed vehicle having a hitch element comprising a fork-like sighting member attached to the rear of the towing vehicle above said hitching element and in vertical alignment therewith and a flexible sighting pole assembly adjustably attached to the towed vehicle, said assembly including a vertical sighting pole having a lower end and a longitudinal axis, an offset U-shaped member attached to the lower end of said vertical sighting pole, a tail section extending from said U-shaped member along said longitudinal axis on a side of the U-shaped member opposite the vertical sighting pole, said U-shaped member being positioned to extend around said hitch element, with the tail section below the hitch element so that said longitudinal axis extends substantially vertically through the hitch element, whereby when aligning said hitching element and said hitch element for hook-up, said hitching element bumps said tail section causing the vertical sighting pole to vibrate and thereby provide an indication of proper alignment when viewed through said fork-like sighting member.
Claim 3
Dependent Claim
26 words
A guide system according to claim 1 whereby the fork-like sighting member is attached to the towing vehicle by means of at least one suction cup.
Claim 4
Dependent Claim
19 words
A fork-like sighting member according to claim 2 whereby said at least one suction cup is made of tubber.
Claim 5
Dependent Claim
17 words
A fork-like sighting member according to claim 3 whereby the fork-like sighting component is prepared from metal.
Claim 6
Dependent Claim
22 words
A guide system according to claim 4 whereby the sighting pole assembly is attached to a jack stand of said hitch element.
Claim 7
Dependent Claim
30 words
A guide system according to claim 4 wherein said hitch element has a hitch tongue whereby said sighting pole assembly is attached to the hitch tongue of said hitch element.
Claim 8
Dependent Claim
30 words
A guide system according to claim 1 whereby said assembly includes a horizontal member attached perpendicularly to the vertical sighting pole at a point adjacent to said offset U-shaped member.
Claim 9
Dependent Claim
21 words
A guide system according to claim 7 whereby said horizontal member is attached to a jack stand of said hitch element.
Claim 10
Dependent Claim
29 words
A guide system according to claim 7 wherein said hitch element has a hitch tongue whereby said horizontal member is attached to the hitch tongue of said hitch element.
Claim 11
Dependent Claim
22 words
A guide system according to claim 8 whereby said horizontal member is connected to a hose clamp attached to said jack stand.
Claim 12
Dependent Claim
21 words
A guide system according to claim 9 whereby said horizontal member is connected to a bracket attached to said hitch tongue.
Claim 13
Dependent Claim
19 words
A guide system according to claim 1 whereby said tail section is plastic tubing enclosed in a rubber sleeve.
Claim 14
Dependent Claim
21 words
A guide system according to claim 8 where said hitching element includes a ball and said hitch element includes a socket.
Claim 15
Dependent Claim
21 words
A guide system according to claim 10 where said hitching element includes a ball and said hitch element includes a socket.
Claim 16
Dependent Claim
15 words
A guide system according to claim 7 wherein said horizontal member is adjustable in length.
Claim 17
Dependent Claim
27 words
A guide system according to claim 10 wherein said horizontal member and said hose clamp are connected by means which permit vertical adjustment of said horizontal member.
Claim 18
Dependent Claim
26 words
A guide system according to claim 11 wherein said horizontal member and said bracket are connected by means which permit vertical adjustment of said horizontal member.
Claim 19
Dependent Claim
47 words
A guide system according to claim 7 whereby said sighting pole assembly is made in sections which can be disassembled so that said sections can be stored in a container; said fork-like sighting member being removable from said towing vehicle to also be stored in said container.
Claim 20
Dependent Claim
20 words
A guide system according to claim 18 wherein said sections are made of interfitting pieces of metal and/or plastic tubing.
References Cited (Backward Citations)
US3015162A
Cited
US3159917A
Cited
US3366328A
Cited
US3418628A
Cited
US3702029A
Cited
US3765703A
Cited
US3818599A
Cited
US3901536A
Cited
US3918746A
Cited
US4054302A
Cited
US4065147A
Cited
US4313264A
Cited
US4285138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |