Patent US751459A successfully refreshed from Google Patents.
Patent US4589814A successfully refreshed from Google Patents.
US4589814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat and car trailer
Assignee: Individual
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Filing: 1984-08-03
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Granted: 1986-05-20
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Expires: 2004-08-03
Abstract
Abstract This application covers a trailer which has platforms at two levels, one for a boat and one for an automobile. It includes a frame supported by wheels, a primary loading platform which rests on the main frame and is pivotally attached thereto so that it can be tilted therewith. An upper or secondary load carrying platform is supported above the primary load platform by four stanchion. Means are provided to pull the secondary load platform down to the first load platform and then pivot the two so that a boat can be pulled onto the upper or secondary load platform. Then, the upper load platform is pivoted about the stanchion to an upright position and locked in place. The secondary or primary loading platforms are then pivoted together and the lower platform can then be loaded, for example, by driving a car up on it. When it is loaded, then the fixed primary and secondary loading platforms are rotated about the pivot so that they rest securely on the main frame. Means are provided to secure the platforms to the frame.
Inventors
- 👤 Medwin A. Cates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:10
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
113 words
A trailer for supporting a primary load and a secondary load comprising: a main frame supported by wheels; a primary loading platform supported from said frame and having a pivot means near the rear end of said main frame so that said primary loading can be rotated from an at rest horizontal position on said frame to a tilted position rearwardly with respect to the trailer; a secondary loading platform; a pair of front stanchions and a pair of rear support stanchions each stanchion pivotally connected at its lower end to said primary loading platform and at its upper end to said secondary loading platform; means to fix said stanchions to prevent rotation.
Claim 2
Dependent Claim
113 words
A trailer for supporting a primary load and a secondary load comprising: a main frame supported by wheels; a primary loading platform supported from said frame and having a pivot means near the rear end of said main frame so that said primary loading can be rotated from an at rest horizontal position on said frame to a tilted position rearwardly with respect to the trailer; a secondary loading platform; a pair of front stanchions and a pair of rear support stanchions each stanchion pivotally connected at its lower end to said primary loading platform and at its upper end to said secondary loading platform; means to fix said stanchions to prevent rotation.
Claim 3
Dependent Claim
31 words
A trailer as defined in claim 1 including means to apply force to said primary loading platform to cause it to rotate from its tilted position to said at rest position.
Claim 4
Dependent Claim
58 words
A trailer as defined in claim 2 in which said means to fix includes a cam latch saddle on the rear side of the forward cross-member of said primary loading platform and cam latch and cam guide supported from a forward cross-member of said main frame which is located to the front of said primary loading platform cross-member.
Claim 5
Dependent Claim
362 words
A trailer having a front end and a rear end and which comprises: a main frame supported by wheels, said main frame having a pivot point to the rear of said wheels, a mast rigidly supported from said main frame at the front end of said trailer and supporting a sheave means above a said main frame; a winch having a line and supported from said main frame, said line extendable over said sheave; a primary loading platform having a frame comprising two elongated side members with cross-members therebetween each said side rail having a forward horizontal pivot hole, a rear horizontal pivot hole and tilt hole to front of said rear horizontal pivot hole; pivot means connecting said tilt hole of said primary loading platform and the pivot piont of said main frame; a secondary loading platform having a frame to be positioned above said primary loading platform, said secondary loading platform having a side rail on either side thereof and cross-members therebetween and each said side rail having a forward horizontal pivot hole and a horizontal rear pivot hole; two front stanchions for supporting the secondary loading platform from said primary loading platform, each said stanchion having a forward directed right angle arm at the upper end with a hole in said arm and a rear directed right angle arm at the lower end thereof having a horizontal hole therein; bolt means insertable through said upper horizontal hole of said stanchion and extending the corresponding holes in said frame of the secondary loading platform and bolts extendable through the lower horizontal holes of each said stanchion and through the corresponding horizontal pivot holes in said primary loading plaform so that said secondary loading platform and said primary loading platform in said stanchion form a parallelogram type structure that is tiltable toward the rear of said trailer; means to fix said front stanchion with respect to said primary loading platform; an eyelet means on the front end of each of said primary loading platform and said secondary loading platform for selective attachment to said winch line; means to secure the front end of said primary loading platform to said main frame.
Claim 6
Dependent Claim
362 words
A trailer having a front end and a rear end and which comprises: a main frame supported by wheels, said main frame having a pivot point to the rear of said wheels, a mast rigidly supported from said main frame at the front end of said trailer and supporting a sheave means above a said main frame; a winch having a line and supported from said main frame, said line extendable over said sheave; a primary loading platform having a frame comprising two elongated side members with cross-members therebetween each said side rail having a forward horizontal pivot hole, a rear horizontal pivot hole and tilt hole to front of said rear horizontal pivot hole; pivot means connecting said tilt hole of said primary loading platform and the pivot piont of said main frame; a secondary loading platform having a frame to be positioned above said primary loading platform, said secondary loading platform having a side rail on either side thereof and cross-members therebetween and each said side rail having a forward horizontal pivot hole and a horizontal rear pivot hole; two front stanchions for supporting the secondary loading platform from said primary loading platform, each said stanchion having a forward directed right angle arm at the upper end with a hole in said arm and a rear directed right angle arm at the lower end thereof having a horizontal hole therein; bolt means insertable through said upper horizontal hole of said stanchion and extending the corresponding holes in said frame of the secondary loading platform and bolts extendable through the lower horizontal holes of each said stanchion and through the corresponding horizontal pivot holes in said primary loading plaform so that said secondary loading platform and said primary loading platform in said stanchion form a parallelogram type structure that is tiltable toward the rear of said trailer; means to fix said front stanchion with respect to said primary loading platform; an eyelet means on the front end of each of said primary loading platform and said secondary loading platform for selective attachment to said winch line; means to secure the front end of said primary loading platform to said main frame.
Claim 7
Dependent Claim
38 words
A trailer as defined in claim 4 in which said mast is a vertical member supported from said main frame and has a horizontal mast arm supported above the main frame for supporting said line and said sheave.
Claim 8
Dependent Claim
60 words
A trailer as defined in claim 4 in which said means to secure includes a cam latch saddle on the rear side of the forward cross-member of said primary loading platform and a cam latch and a cam guide supported from a forward cross-member of said main frame which is located to the front of said primary loading platform cross-member.
Claim 9
Dependent Claim
59 words
A trailer as defined in claim 4 in which said means to secure includes a cam latch saddle on the rear side of the forward cross-member of said primary loading platform and a cam latch and cam guide supported from a forward cross-member of said main frame which is located to the front of said primary loading platform cross-member.
Claim 10
Dependent Claim
31 words
A trailer as defined in claim 7 including means to apply force to said primary loading platform to cause it to rotate from a tilted position to said at rest position.
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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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |