Patent US5113588A successfully refreshed from Google Patents.
← Back to Patent Explorer
US5113588A Expired / Lapsed US ⏱️ 0.0 years remaining

Isomorphic trailer hitch alignment guide device

Assignee: Walston Bob
•
Filing: 1991-12-26
•
Granted: 1992-05-19
•
Expires: 2011-12-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A trailer hitch alignment guide device, for a ball and socket hitch, wherein the guides can be mounted either to the rear or side, wherein the sighting elements on the guides are visually emblematic of the coupling elements, where one sighting element is isomorphic of the hitch ball and the other sighting element is isomorphic of the socket, and where the sighting elements are scribed with lines which visually amplify deviations from alignment.

Inventors

  • 👤 Bob E. Walston

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 22:15
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/36

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 360 words
A device for facilitating the alignment and subsequent coupling of a towing vehicle to a towed vehicle, wherein the towing vehicle is equipped with a hitch having a hitch ball, and the towed vehicle is equipped with a tongue having a socket, wherein said device consists of: a) a ball guide having a mounting base, an extension rod, and a male sighting element that is emblematic of a hitch ball; wherein said mounting base has a fastening means for attaching the ball guide to the towing vehicle, and a pivoting-locking means for seating the extension rod and setting an angle of projection of the same; wherein said extension rod has a telescoping-rotating-locking means, which enables the extension rod, which is affixed to the mounting base, to be extended to a desired length, rotated such that the male sighting element is clearly visible to a driver, and locked in position; wherein said male sighting element, which is a fitted on the end of the extension rod, has crossing lines on a frontal portion of the sighting element, wherein said crossing lines act as a visual amplification of deviations from alignment; b) a socket guide having a mounting base, an extension rod, and a female sighting element that is emblematic of a socket; wherein said mounting base has a fastening means for attaching the socket guide to the towed vehicle, and a pivoting-locking means for seating the extension rod and setting an angle of projection of the same; wherein said extension rod has a telescoping-rotating-locking means, which enables the extension rod, which is affixed to the mounting base, to be extended to a desired length, rotated such that when the hitch ball of the towing vehicle is aligned with the socket of the towed vehicle, the female sighting element is substantially overlaid and aligned with the male sighting element; wherein said female sighting element, which is a fitted on the end of the extension rod, has crossing lines on a frontal portion of the sighting element, wherein said crossing lines, which are substantially co-extensive with the crossing lines on the male sighting element, act as a visual amplification of deviations from alignment.
Claim 2
Independent Claim 360 words
A device for facilitating the alignment and subsequent coupling of a towing vehicle to a towed vehicle, wherein the towing vehicle is equipped with a hitch having a hitch ball, and the towed vehicle is equipped with a tongue having a socket, wherein said device consists of: a) a ball guide having a mounting base, an extension rod, and a male sighting element that is emblematic of a hitch ball; wherein said mounting base has a fastening means for attaching the ball guide to the towing vehicle, and a pivoting-locking means for seating the extension rod and setting an angle of projection of the same; wherein said extension rod has a telescoping-rotating-locking means, which enables the extension rod, which is affixed to the mounting base, to be extended to a desired length, rotated such that the male sighting element is clearly visible to a driver, and locked in position; wherein said male sighting element, which is a fitted on the end of the extension rod, has crossing lines on a frontal portion of the sighting element, wherein said crossing lines act as a visual amplification of deviations from alignment; b) a socket guide having a mounting base, an extension rod, and a female sighting element that is emblematic of a socket; wherein said mounting base has a fastening means for attaching the socket guide to the towed vehicle, and a pivoting-locking means for seating the extension rod and setting an angle of projection of the same; wherein said extension rod has a telescoping-rotating-locking means, which enables the extension rod, which is affixed to the mounting base, to be extended to a desired length, rotated such that when the hitch ball of the towing vehicle is aligned with the socket of the towed vehicle, the female sighting element is substantially overlaid and aligned with the male sighting element; wherein said female sighting element, which is a fitted on the end of the extension rod, has crossing lines on a frontal portion of the sighting element, wherein said crossing lines, which are substantially co-extensive with the crossing lines on the male sighting element, act as a visual amplification of deviations from alignment.
Claim 3
Dependent Claim 39 words
The device as claimed in claim 1, wherein said male sighting element is disk shaped having crossing lines, wherein said crossing lines are comprised of vertical, horizontal and oblique crossing lines which converge on an epicenter of the disk.
Claim 4
Dependent Claim 115 words
The device as claimed in claim 1 wherein said female sighting element is toroid shaped having crossing lines and a pair of parametric lines, wherein said crossing lines are comprised of vertical, horizontal and oblique crossing lines which are co-extensions of the crossing lines on the male sighting element, and wherein said pair of parametric lines consist of an inner and an outer ring scribed on the frontal potion of the female sighting element, wherein said inner and outer rings define an area on the toroid which is a region of alignment, wherein, when the male sighting element is within this region of alignment, the hitch ball is aligned with the socket in all planes,
Claim 5
Dependent Claim 36 words
The device as claimed in claim 1, wherein said mounting base having a fastening means, for both the ball guide and the socket guide, where the fastening means is a base plate fitted with a magnet.
Claim 6
Dependent Claim 47 words
The device as claimed in claim 1, wherein said extension rod having a telescoping-rotating-locking means, for both the ball guide and the socket guide, is two or more tubes within tubes which can be set at a fixed length and fixed rotation with a thumb set screw.

References Cited (Backward Citations)

GB191328973A Cited
US2984011A Cited
US3015162A Cited
US3720100A Cited
US3889384A Cited
US3765703A Cited
US3818599A Cited
US4054302A Cited
US4169610A Cited
US4285138A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-05-19 1995-11-18 1996-05-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-05-19 1999-11-18 2000-05-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-05-19 2003-11-18 2004-05-19 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag