US3815768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel trailer
Assignee: Individual
•
Filing: 1972-01-03
•
Granted: 1974-06-11
•
Expires: 1992-01-03
Abstract
Abstract A trailer for hauling wall panels, containers, palletized loads or the like comprising a transverse expandable front member with side members pivotally attached at opposite ends thereof and guide members pivotally attached at the rear ends of the side members. The guide members are mounted on wheels and a closure member is pivotally attached to the rear end of one of the guide members and disengageably attached at the other end to the outer end of the other guide members. Hydraulically actuated means is employed to pivot the guide means relative to the side members to move rear ends of the side members outwardly to deposit the rear end of a load and the front member may then be expanded to disengage the front end of the load. An end of the closure member may then be disengaged permitting movement of the trailer away from the deposited load.
Inventors
- 👤 W Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:46
CPC Classifications
B; B60; B60B; B60B35/00; B60B35/02; B60B35/10; B60B35/1036; B60B35/1054; B60B35/1072; B60B35/12; B60B35/14; B60P; B60P3/00; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; B62D53/062; B60Y; B60Y2200/00; B60Y2200/10; B60Y2200/14; B60Y2200/147
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
140 words
A trailer comprising, a transversely extending front frame member; means to secure the front frame member to a prime mover; first and second side frame members pivotally attached to the outer ends of said front frame; extension members pivotally attached to the outer end of each side frame member; a wheel carried by each extension member; a rear frame member pivotally attached to the outer end of one of said extension members; detachable attachment means between the other end of said rear frame member and the outer end of the other extension member; and expansible and retractable means between each of said extension members and the side frame member to which it is attached, whereby the extension members may be pivoted out of alignment with the side frame members to cause the wheels carried thereby to be directed angularly outwardly.
Claim 2
Dependent Claim
140 words
A trailer comprising, a transversely extending front frame member; means to secure the front frame member to a prime mover; first and second side frame members pivotally attached to the outer ends of said front frame; extension members pivotally attached to the outer end of each side frame member; a wheel carried by each extension member; a rear frame member pivotally attached to the outer end of one of said extension members; detachable attachment means between the other end of said rear frame member and the outer end of the other extension member; and expansible and retractable means between each of said extension members and the side frame member to which it is attached, whereby the extension members may be pivoted out of alignment with the side frame members to cause the wheels carried thereby to be directed angularly outwardly.
Claim 3
Dependent Claim
18 words
The combination called for in claim 1 wherein the expansible and retractable members are double acting hydraulic cylinders.
Claim 4
Dependent Claim
36 words
The combination called for in claim 1 wherein the front frame member is comprised of at least two slidably related members with the addition of means to move the slidably related members relative to each other.
Claim 5
Dependent Claim
63 words
The combination called for in claim 1 wherein the front frame member is comprised of a central tubular member and an outer member at each end thereof slidably disposed therein, each of said end members being pivotally attached at its outer end to the side frame members; and with the addition of means to move the outer members relative to the central member.
Claim 6
Dependent Claim
97 words
The combination called for in claim 1 wherein the means for detachably securing the end of the rear frame member to the extension member comprises a sleeve slidably disposed on the outer end of the rear frame member, lugs on the end of the extension member, hooks on the sleeve engageable with the lugs, an actuating arm, and toggle links between the sleeve and the arm arranged to move the hook members into engagement with the lugs when the arm is pivoted inwardly to extend the links and move the sleeve inwardly along the rear frame member.
Claim 7
Dependent Claim
75 words
The combination called for in claim 1 with the addition of a pusher arm pivotally attached to the upper side of the side frame member, and a link pivotally attached between the arm and the extension member to cause the pusher arm to pivot inwardly into engagement with a load on the trailer when the extension member is moved by retraction of the expansible and retractable member between the side member and the extension member.
Claim 8
Dependent Claim
152 words
A trailer comprising an expandable transversely extending front frame member; means to expand the front frame member; first and second side frame members pivotally attached to the outer ends of the front frame member; wheel support means pivotally secured to the outer ends of each side frame member, said wheel support means being movable about vertical axes; at least one wheel on each wheel support means; steering means to control the line of travel of said wheels, said steering means being adapted to move the wheel secured to the first side frame member in a clockwise direction about a vertical axis and to move the wheel secured to the second frame member in a counter-clockwise direction about a vertical axis; a rear frame member secured to one of the side frame members; and means to detachably secure said rear frame member to the outer end of the other said side frame member.
Claim 9
Dependent Claim
152 words
A trailer comprising an expandable transversely extending front frame member; means to expand the front frame member; first and second side frame members pivotally attached to the outer ends of the front frame member; wheel support means pivotally secured to the outer ends of each side frame member, said wheel support means being movable about vertical axes; at least one wheel on each wheel support means; steering means to control the line of travel of said wheels, said steering means being adapted to move the wheel secured to the first side frame member in a clockwise direction about a vertical axis and to move the wheel secured to the second frame member in a counter-clockwise direction about a vertical axis; a rear frame member secured to one of the side frame members; and means to detachably secure said rear frame member to the outer end of the other said side frame member.
Claim 10
Dependent Claim
27 words
The combination called for in claim 7 wherein the end of the rear frAme member opposite the detachable means is pivotally attached to the side frame member.
Claim 11
Dependent Claim
41 words
The combination called for in claim 7 wherein the wheel support means are extensions pivotally attached to the outer ends of side frame members; and the steering means are hydraulic cylinders pivotally attached between the extensions and the side frame members.
Claim 12
Dependent Claim
37 words
The combination called for in claim 7 with the addition of load retaining means extending upwardly from the outer edge of each side frame member to prevent a load disposed on the side frames from moving sidewise.
Claim 13
Dependent Claim
141 words
A trailer comprising an expandable transversely extending front frame member; means to expand the front frame member; first and second side frame members pivotally attached to the outer ends of the front frame member; a pusher arm pivotally attached to each side frame member; extension means pivotally attached to the outer ends of each of said side frame members; a hydraulic cylinder pivotally attached between each of said extension means and the side frame members to control the line of travel of said wheels; actuating means between each said pusher arm and said hydraulic cylinder associated with the extension to pivot the arm inwardly of the side frame member; a rear frame member secured to one of the side frame members; and means to detachably secure said side frame member to the outer end of the other said side frame member.
Claim 14
Dependent Claim
141 words
A trailer comprising an expandable transversely extending front frame member; means to expand the front frame member; first and second side frame members pivotally attached to the outer ends of the front frame member; a pusher arm pivotally attached to each side frame member; extension means pivotally attached to the outer ends of each of said side frame members; a hydraulic cylinder pivotally attached between each of said extension means and the side frame members to control the line of travel of said wheels; actuating means between each said pusher arm and said hydraulic cylinder associated with the extension to pivot the arm inwardly of the side frame member; a rear frame member secured to one of the side frame members; and means to detachably secure said side frame member to the outer end of the other said side frame member.
References Cited (Backward Citations)
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |