US4068772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual load trailer
Assignee: Individual
•
Filing: 1977-01-12
•
Granted: 1978-01-17
•
Expires: 1997-01-12
Abstract
Abstract A trailer is disclosed which includes a trailer base and a carrier frame, the trailer base receiving one load and a load platform of the carrier frame receiving a second load. The load platform is mounted on legs which are pivotable at both ends so that the load platform can be swung from a carrying position to a loading position and back.
Inventors
- 👤 C. R. Prudhomme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:31
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
136 words
A dual load trailer comprising a trailer base having wheel means thereon and adapted to carry a first load thereupon; a carrier frame mounted on the trailer base; a load platform of the carrier frame movable between a carrying and a loading position and adapted to carry a second load; front and rear leg means on the carrier frame connecting the load platform to the trailer base and pivotally connected to both the load platform and the trailer base, the rear leg means being longer than the front leg means and being tilted rearwardly to bias the load platform to pivot rearwardly to lower the load platform to its loading position; and holding means to secure the load platform against rearward movement to hold the load platform parallel to the trailer base in its carrying position.
Claim 2
Dependent Claim
136 words
A dual load trailer comprising a trailer base having wheel means thereon and adapted to carry a first load thereupon; a carrier frame mounted on the trailer base; a load platform of the carrier frame movable between a carrying and a loading position and adapted to carry a second load; front and rear leg means on the carrier frame connecting the load platform to the trailer base and pivotally connected to both the load platform and the trailer base, the rear leg means being longer than the front leg means and being tilted rearwardly to bias the load platform to pivot rearwardly to lower the load platform to its loading position; and holding means to secure the load platform against rearward movement to hold the load platform parallel to the trailer base in its carrying position.
Claim 3
Dependent Claim
42 words
A dual load trailer as claimed in claim 1 wherein the front leg means are tilted forwardly, and wherein the angle of rearward tilt of the rear leg means is greater than the angle of forward tilt of the front leg means.
Claim 4
Dependent Claim
31 words
A dual load trailer as claimed in claim 1 wherein the holding means includes cable means attached to the load platform and a winch to hold tension on the cable means.
Claim 5
Dependent Claim
46 words
A dual load trailer as claimed in claim 3 wherein the cable means includes a pair of lifting and securing cables each attached at on end to the rear end of the load platform and each having a moving pulley block at the other end thereof.
Claim 6
Dependent Claim
48 words
A dual load trailer as claimed in claim 4 wherein lifting struts extend from the rear leg means, the lifting struts engaging the lifting and securing cables to allow the winch to lift the rear end of the load platform when it is lowered into the loading position.
Claim 7
Dependent Claim
70 words
A dual load trailer as claimed in claim 4 wherein the cable means includes a pair of moving pulley blocks, a pair of stationary pulley blocks and a pair of winch cables, the moving pulley blocks being on the ends of the lifting and securing cables and the winch cables extending over both the moving and the stationary pulley blocks to allow the winch to act on the load platform.
Claim 8
Dependent Claim
30 words
A dual load trailer as claimed in claim 1 wherein carrier frame includes a support post and the holding means includes a securement lock to secure to the support post.
Claim 9
Dependent Claim
27 words
A dual load trailer as claimed in claim 1 wherein the load platform has a guide channel formed in it to aid in loading an article thereon.
Claim 10
Dependent Claim
318 words
A dual load trailer comprising a trailer base adapted to receiving a first load; wheels on the trailer base; a carrier frame attached to the trailer frame; a vertically extending support post of the carrier frame; a pair of winch supports of the carrier frame secured to said support post; a winch secured to the winch supports; a base of the carrier frame including a pair of side base beams, a front base beam and a rear base beam; a load platform of the carrier frame including a pair of top frame side beams, a top frame front beam, a top frame rear beam and decking stretched therebetween; the load platform having a guide channel formed therein; a pair of front legs each pivotally attached to both a one of the top frame side beams and a one of the side base beams, the front legs both having a forward tilt; a pair of rear legs each pivotally attached to both a one of the top frame side beams and a one of the side base beams, the rear legs both having a rearward tilt the angle of which is greater than the angle of the forward tilt of the front legs; a pair of lifting and securing cables each attached to a respective one of the top frame side beams; a moving pulley block attached to each lifting and securing cable; a stationary pulley block attached to each side base beam; a pair of winch cables each having one end secured to a one of the side base beams and another end secured to the winch and each extending through a one of the moving pulley blocks and the stationary pulley blocks; a lifting strut extending forwardly at a fixed angle from each rear leg; a yoke at the end of each lifting strut; and a securement lock to secure the load platform to the support post.
Claim 11
Dependent Claim
318 words
A dual load trailer comprising a trailer base adapted to receiving a first load; wheels on the trailer base; a carrier frame attached to the trailer frame; a vertically extending support post of the carrier frame; a pair of winch supports of the carrier frame secured to said support post; a winch secured to the winch supports; a base of the carrier frame including a pair of side base beams, a front base beam and a rear base beam; a load platform of the carrier frame including a pair of top frame side beams, a top frame front beam, a top frame rear beam and decking stretched therebetween; the load platform having a guide channel formed therein; a pair of front legs each pivotally attached to both a one of the top frame side beams and a one of the side base beams, the front legs both having a forward tilt; a pair of rear legs each pivotally attached to both a one of the top frame side beams and a one of the side base beams, the rear legs both having a rearward tilt the angle of which is greater than the angle of the forward tilt of the front legs; a pair of lifting and securing cables each attached to a respective one of the top frame side beams; a moving pulley block attached to each lifting and securing cable; a stationary pulley block attached to each side base beam; a pair of winch cables each having one end secured to a one of the side base beams and another end secured to the winch and each extending through a one of the moving pulley blocks and the stationary pulley blocks; a lifting strut extending forwardly at a fixed angle from each rear leg; a yoke at the end of each lifting strut; and a securement lock to secure the load platform to the support post.
References Cited (Backward Citations)
US3718227A
Cited
US3970203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |