Patent US3837509A successfully refreshed from Google Patents.
US3837509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat alignment apparatus for attachment to boat trailer
Assignee: Compass Holding Corp
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Filing: 1972-11-08
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Granted: 1974-09-24
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Expires: 1992-11-08
Abstract
Abstract Apparatus attachable in pairs to rear portions of a boat trailer for guiding a boat onto or off the trailer, wherein the apparatus comprises an elongated rigid first member attachable to the chassis of the trailer; an elongated rigid second member coupled to the first member transversely thereof and pivotable about the longitudinal axis of the first member; an arm-like third member coupled to the second member generally transversely thereof and pivotable about the longitudinal axis of the second member; and means for locking the members at predetermined positions relative to one another.
Inventors
- 👤 R Gladnick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:41
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/1075
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
137 words
In apparatus for paired attachment to opposing rear portions of a boat trailer having a chassis, for guiding a boat onto or off the trailer, the combination of: an elongated, rigid first member adapted for attachment to the chassis of said trailer longitudinally thereof; means for attaching said first member to said chassis, an elongated, rigid second member coupled to said first member for pivotal motion about the longitudinal axis of said first member, said second member extending generally transversely of said first member and laterally of said chassis; an arm-like third member coupled to said second member for pivotal motion in a substantially vertical plane about the longitudinal axis of said second member, said third member extending generally transversely of said second member; and means for locking said members at predetermined positions relative to one another.
Claim 2
Dependent Claim
137 words
In apparatus for paired attachment to opposing rear portions of a boat trailer having a chassis, for guiding a boat onto or off the trailer, the combination of: an elongated, rigid first member adapted for attachment to the chassis of said trailer longitudinally thereof; means for attaching said first member to said chassis, an elongated, rigid second member coupled to said first member for pivotal motion about the longitudinal axis of said first member, said second member extending generally transversely of said first member and laterally of said chassis; an arm-like third member coupled to said second member for pivotal motion in a substantially vertical plane about the longitudinal axis of said second member, said third member extending generally transversely of said second member; and means for locking said members at predetermined positions relative to one another.
Claim 3
Dependent Claim
69 words
Apparatus as in claim 1, including a first pair of rotatably engaged plates coupling said first and second members, and a second pair of rotatably engaged plates coupling said second and third members, wherein one of said first pair of plates is fixedly mounted across an end of said first member and one of said second pair of plates is fixedly mounted across an end of said second member.
Claim 4
Dependent Claim
40 words
Apparatus as in claim 2 wherein one of each pair of plates is slotted near the periphery thereof so as to receive bolts for locking the plates in each pair together at predetermined positions of rotation relative to one another.
Claim 5
Dependent Claim
27 words
Apparatus as in claim 2 wherein the plates mounted on said second and third members are adapted to be slidably positioned along said second and third members.
Claim 6
Dependent Claim
24 words
Apparatus as in claim 4 wherein said plates slidably mounted on said second and third members are held at predetermined positions thereon by U-bolts.
Claim 7
Dependent Claim
39 words
ApparatUs as in claim 2 wherein the other plate of said first pair of plates is slidably mounted on said second member, and the other plate of said second pair of plates is slidably mounted on said third member.
Claim 8
Dependent Claim
78 words
Apparatus as in claim 2 wherein the plate mounted on said second member has at least one hole near the periphery thereof, and the plate mounted on said third member has at least two holes near the periphery thereof, said holes in said plates being positioned for passage therethrough of locking means, whereby said plates may be locked together at relative positions of rotation corresponding to the distance between said holes in the plate mounted on said member.
Claim 9
Dependent Claim
46 words
Apparatus as in claim 1, including a plurality of riser clamps for attachment of said first member to the chassis of said trailer, the riser portions of said clamps being angled such that said clamps seat on said first member at an angle of about 45*.
Claim 10
Dependent Claim
25 words
Apparatus as in claim 5 wherein said U-bolts have set screws therethrough whereby rotation of said second and third members in said U-bolts is prevented.
Claim 11
Dependent Claim
60 words
Apparatus as in claim 4 wherein said plates slidably mounted on said second and third members are held at predetermined positions thereon by U-bolts, and wherein the diameters of said plates are larger than the diameters of the plates paired therewith, so as to permit locking of the heads of said U-bolts on the peripheries of said larger diameter plates.
Claim 12
Dependent Claim
62 words
Apparatus as in claim 1 wherein said arm-like third member has at least one elbow along its length such that the portion of said member coupled to said second member is adapted to clear the rear end of said trailer chassis while the remaining portion of said third member is directed upwardly along the side of a boat on said trailer chassis.
Claim 13
Dependent Claim
26 words
Apparatus as in claim 11 wherein said arm-like third member has two of said elbows so as to give a generally C-shape to said third member.
Claim 14
Dependent Claim
35 words
A boat trailer comprising a chassis and paired apparatus as defined in claim 1, said paired apparatus being attached to opposing rear portions of said chassis for guiding a boat onto or off said chassis.
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |