Patent US3701445A successfully refreshed from Google Patents.
US3701445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilting bed trailer
Assignee: Individual
•
Filing: 1971-09-13
•
Granted: 1972-10-31
•
Expires: 1991-09-13
Abstract
Abstract A tilting bed trailer having a bed frame connectable at one end to a towing vehicle, and having supporting arms, ground wheels mounted on the supporting arms, the arms being connected for swinging movement at after ends to the frame so that when the arms are swung between horizontal and upwardly sloped positions the frame is moved between elevated and lowered positions.
Inventors
- 👤 Alfred E Haslem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:00
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
211 words
A tilting bed trailer including: a. a bed frame (11) having parallel side frame members (12, 12.1) on a common plane, b. a pair of members having sockets (18, 18.1) opening outward of opposite sides of the trailer bed frame, c. a pair of supporting arms (21, 21.1) disposed on opposite sides of, and parallel to, the side frame members of the bed frame, d. ground engaged wheels (37, 37.1) mounted at forward ends of the supporting arms, e. stub shafts (25, 25.1) projecting from aft ends of the supporting arms, the shafts having a rotatable and slidable fit in the sockets, f. leaf springs (27, 27.1) connected to and extending forward of forward ends of the supporting arms, each spring having a forward and an aft end, g. means (51, 55) connected to forward ends of the springs for rotating the supporting arms so as to move the bed frame between elevated and lowered positions, h. flanges (42. 42.1) connected to the side frame members aft of the supporting arms, i. flanges (39, 39.1) at aft ends of the supporting arms, having a sliding fit between the side frame members and the first mentioned flanges for preventing withdrawal of the shafts from the sockets when the supporting arms are moved.
Claim 2
Dependent Claim
211 words
A tilting bed trailer including: a. a bed frame (11) having parallel side frame members (12, 12.1) on a common plane, b. a pair of members having sockets (18, 18.1) opening outward of opposite sides of the trailer bed frame, c. a pair of supporting arms (21, 21.1) disposed on opposite sides of, and parallel to, the side frame members of the bed frame, d. ground engaged wheels (37, 37.1) mounted at forward ends of the supporting arms, e. stub shafts (25, 25.1) projecting from aft ends of the supporting arms, the shafts having a rotatable and slidable fit in the sockets, f. leaf springs (27, 27.1) connected to and extending forward of forward ends of the supporting arms, each spring having a forward and an aft end, g. means (51, 55) connected to forward ends of the springs for rotating the supporting arms so as to move the bed frame between elevated and lowered positions, h. flanges (42. 42.1) connected to the side frame members aft of the supporting arms, i. flanges (39, 39.1) at aft ends of the supporting arms, having a sliding fit between the side frame members and the first mentioned flanges for preventing withdrawal of the shafts from the sockets when the supporting arms are moved.
Claim 3
Dependent Claim
62 words
A trailer as claimed in claim 1 including flanges (43, 43.1) at forward ends of the supporting arms and flanges (44, 44.1) connected to the side frame members of the trailer bed frame, the flanges on the arms having a sliding fit between the frame flanges and the side frame members when the arms are disposed parallel to the side frame members.
Claim 4
Dependent Claim
87 words
A trailer as claimed in claim 1 including brackets (45, 45.1) having side walls, the brackets being mounted on each side frame member and adapted for receiving forward ends of the springs when the arms are disposed parallel to the side frame members and pins (48, 50) extendable through holes in the side walls of the brackets and over the springs, each pin having an annular groove (49) in which a wall of each bracket engages for releasably locking the pins against movement relative to the brackets.
Claim 5
Dependent Claim
73 words
A trailer as claimed in claim 1 in which the socket members extend in a plane parallel to the plane of the trailer bed frame and extend at an acute forward angle to a fore and aft axis of the trailer so that forward ends of the arms swing upwards and outwards away from the side frame members of the trailer bed frame when the bed frame is lowered to a loading position.
Claim 6
Dependent Claim
98 words
A trailer as claimed in claim 1 wherein the means for moving the supporting arms includes a first cable (51) extending beneath the trailer bed frame and connected at opposite ends to the forward ends of the springs, a second cable (55) connected at a mid-point of the first cable, a winding drum (59) mounted for rotation on the trailer bed frame on which the second cable is wound so that tension can be applied to the cables to swing the arms downward from upwardly sloped positions so as to lift the bed frame to an elevated position.
Claim 7
Dependent Claim
68 words
A trailer as claimed in claim 1 in which the flanges at aft ends of the supporting arms are movable into a position clear of the flanges of the trailer bed when the supporting arms are swung upwards beyond a position assumed by said supporting arms when the trailer is lowered to the loading position so as to enable the stub shafts to be withdrawn from the sockets.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |