US5224960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle tow bar
Assignee: Automatic Equipment Manufacturing Co
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Filing: 1991-03-15
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Granted: 1993-07-06
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Expires: 2011-03-15
Abstract
Abstract A vehicle tow bar includes a transverse cross member which mounts one pivotal, elongated leg assembly in fixed position at one end of the cross member and a second pivotal, elongated leg assembly for movement along the cross member between a collapsed condition closely adjacent the first leg assembly and an erected, operative position at the opposite end of the cross member. Stub shafts reinforce the ends of the cross member at the points of maximum stress. The ends of the leg assemblies opposite the cross member are connected to an apex frame which mounts a socket coupler component of a ball and socket type trailer hitch. Each leg assembly includes telescopic sections for adjusting the length of the leg assembly, and the locking mechanism releasably interconnects the telescopic sections to secure the latter in fully extended, operative towing condition. Flexible protective boots are provided about one of the telescoping leg sections of each leg assembly to protect the telescoping section against the deleterious effects of the surrounding environment and to contain lubricating grease and the like for constant lubrication of the telescoping leg sections.
Inventors
- 👤 Lee H. Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:11
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/14; B60D1/167; B60D1/48; B60D1/54
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
337 words
A vehicle tow bar, comprising: a) an elongated cross member (18) having a longitudinal axis, b) a pair of mounting brackets (12) configured to be attached to laterally spaced positions at the front end of a vehicle to be towed, c) first and second elongated leg members each having first and second telescoping leg sections (30,38) having an inner section (30) movable within an outer section (38) between extended and retracted positions, d) sleeve means (20,20') mounting the first telescoping leg sections (30,30') of the first and second leg members on the cross member (18) for rotation about the longitudinal axis of the cross member, one of the sleeve means (20') being secured at one end of the cross member against axial movement along said cross member, the other sleeve means (20) being mounted on the cross member (18) for axial movement along the cross member for axial movement of the associated one of the leg members toward and away from the second leg member, e) apex frame means (46) connecting the second telescoping leg sections (38,38') of the first and second leg members together, f) first trailer hitch coupling means (50) configured for releasable connection to a companion second trailer hitch coupling means (52) on a towing vehicle, g) connector means interconnecting the first trailer hitch coupling means and the apex frame means, h) guide bearing means (36) secured in the telescoping end of each outer telescoping leg section (38,38') and configured to slidable receive therethrough the associated inner telescoping leg section (30,30'), i) an enlarged end guide means (40) secured to the telescoping end of each inner telescoping leg section (30,30') and configured to slidably engage the inner surface of the associated outer telescoping leg section (38,38'), and j) locking screw means (64) mounted on each outer telescoping leg section (38,38') releasably engageable with the enlarged end guide means (40) on the associated inner telescoping leg section (30,30') for releasably securing the inner and outer telescoping leg sections (30,30' and 38,38') in fully extended position.
Claim 2
Dependent Claim
337 words
A vehicle tow bar, comprising: a) an elongated cross member (18) having a longitudinal axis, b) a pair of mounting brackets (12) configured to be attached to laterally spaced positions at the front end of a vehicle to be towed, c) first and second elongated leg members each having first and second telescoping leg sections (30,38) having an inner section (30) movable within an outer section (38) between extended and retracted positions, d) sleeve means (20,20') mounting the first telescoping leg sections (30,30') of the first and second leg members on the cross member (18) for rotation about the longitudinal axis of the cross member, one of the sleeve means (20') being secured at one end of the cross member against axial movement along said cross member, the other sleeve means (20) being mounted on the cross member (18) for axial movement along the cross member for axial movement of the associated one of the leg members toward and away from the second leg member, e) apex frame means (46) connecting the second telescoping leg sections (38,38') of the first and second leg members together, f) first trailer hitch coupling means (50) configured for releasable connection to a companion second trailer hitch coupling means (52) on a towing vehicle, g) connector means interconnecting the first trailer hitch coupling means and the apex frame means, h) guide bearing means (36) secured in the telescoping end of each outer telescoping leg section (38,38') and configured to slidable receive therethrough the associated inner telescoping leg section (30,30'), i) an enlarged end guide means (40) secured to the telescoping end of each inner telescoping leg section (30,30') and configured to slidably engage the inner surface of the associated outer telescoping leg section (38,38'), and j) locking screw means (64) mounted on each outer telescoping leg section (38,38') releasably engageable with the enlarged end guide means (40) on the associated inner telescoping leg section (30,30') for releasably securing the inner and outer telescoping leg sections (30,30' and 38,38') in fully extended position.
Claim 3
Dependent Claim
76 words
The vehicle tow bar of claim 1 wherein the locking screw means includes a threaded support mounted pivotally on each outer telescoping section, and a threaded screw extending through the threaded support for pivotal movement into and out of engagement with the enlarged end guide means, the threaded screw being operable when engaging the enlarged end guide means to be rotated to move said enlarged end guide means into abutting engagement with the guide bearing means.
Claim 4
Dependent Claim
39 words
The vehicle tow bar of claim 1 including a flexible, extendable boot member on each leg member enclosing therein the inner telescoping leg section for containing lubricant for the telescoping leg sections and inhibiting the entrance of contaminating matter.
Claim 5
Dependent Claim
40 words
The vehicle tow bar of claim 3 wherein the boot member is of accordion configuration secured at one end to the outer end of the inner telescoping leg section and at the opposite end to the outer telescoping leg section.
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) | 1996-07-05 | 1997-01-04 | 1997-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-05 | 2001-01-04 | 2001-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-05 | 2005-01-04 | 2005-07-06 | $7700.00 | Window Closed / Lapsed |