US3825089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
House trailer hook-up
Assignee: David Manufacturing Co
•
Filing: 1972-10-05
•
Granted: 1974-07-23
•
Expires: 1992-10-05
Abstract
Abstract The disclosure is directed to the combination of a house trailer and a truck or similar vehicle for hauling the trailer. The truck has front and rear wheels, the latter of which are retractable against the bias of suspension leaf springs. The front end of the trailer includes a retractable stand on each side for supporting the trailer when at rest. To transport the trailer, its forward portion is received by the bed of the truck, which is disposed over the rear wheels. The trailer stands are constructed and arranged to engage the rear wheels upon retraction to elevate the wheels from the ground and rigidly secure the trailer to the truck bed.
Inventors
- 👤 D Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:35
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/12; B60; B60S; B60S9/00; B60S9/02; B60S9/04; B60S9/06; B60S9/08; B62D53/00; B62D53/04; B62D53/045; B62D53/06; B62D53/068
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
169 words
The combination of a powered trailer hauling vehicle having front wheel means, rear wheel means and a trailer receiving portion disposed over the rear wheel means, the rear wheel means being retractably mounted and normally occupying a ground engaging position; a trailer having wheel means for supporting at least a part of the trailer, and further including a front portion constructed and arranged for supporting engagement with the trailer receiving portion of the vehicle; retractably mounted stand means for supporting the forward end of the trailer in a rest position, the stand means including a lift member constructed and arranged for engagement with the rear wheel means of the vehicle; and means for retracting the stand means to effect engagement of the rear wheel means by said lift member and to retract the rear wheel means from said normal ground engaging position to cause rigid securement of the trailer to the powered vehicle and to permit hauling the trailer using said front wheel means and said trailer wheel means.
Claim 2
Dependent Claim
169 words
The combination of a powered trailer hauling vehicle having front wheel means, rear wheel means and a trailer receiving portion disposed over the rear wheel means, the rear wheel means being retractably mounted and normally occupying a ground engaging position; a trailer having wheel means for supporting at least a part of the trailer, and further including a front portion constructed and arranged for supporting engagement with the trailer receiving portion of the vehicle; retractably mounted stand means for supporting the forward end of the trailer in a rest position, the stand means including a lift member constructed and arranged for engagement with the rear wheel means of the vehicle; and means for retracting the stand means to effect engagement of the rear wheel means by said lift member and to retract the rear wheel means from said normal ground engaging position to cause rigid securement of the trailer to the powered vehicle and to permit hauling the trailer using said front wheel means and said trailer wheel means.
Claim 3
Dependent Claim
49 words
The combination defined by claim 1, wherein the rear wheel means of the trailer hauling vehicle comprises an axle operatively connected to the vehicle by spring means; and a pair of wheels rotatably mounted on the axle; and the lift member as constructed and arranged to engage the axle.
Claim 4
Dependent Claim
20 words
The combination defined by claim 2, wherein the spring means comprises leaf springs normally biasing the axle toward the ground.
Claim 5
Dependent Claim
36 words
The combination defined by claim 1, wherein the retractable stand means comprises a pair of retractable stands respectively disposed adjacent the sides of the trailers, each of the stands having a lift member rigidly secured thereto.
Claim 6
Dependent Claim
25 words
The combination defined by claim 1, wherein the trailer receiving portion of the trailer hauling vehicle and the front portion of the trailer are mateable.
Claim 7
Dependent Claim
15 words
The combination as defined by claim 5, wherein the mateable portions are convex and concave.
Claim 8
Dependent Claim
22 words
The combination as defined by claim 1, wherein the means for retracting the stand means is actuated by manually rotatable handle means.
Claim 9
Dependent Claim
26 words
The combination as defined by claim 2, wherein the trailer supporting wheel means is mounted rearwardly of the center of longitudinal weight distribution of the trailer.
Claim 10
Dependent Claim
26 words
THe combination as defined by claim 2, wherein the axle is engageable with the frame of the trailer hauling vehicle to limit upward retracting movement thereof.
Claim 11
Dependent Claim
27 words
The combination defined by claim 1, wherein steering of the trailer hauling vehicle and the power and tractive effort therefor are effected through said front wheel means.
Claim 12
Dependent Claim
152 words
The combination of a powered trailer hauling vehicle having front wheel means, rear wheel means and a trailer receiving portion disposed over the rear wheel means, the rear wheel means being retractably mounted and normally occupying a ground engaging position; a trailer having wheel means for supporting at least a part of the trailer, and further including a front portion constructed and arranged for supporting engagement with the trailer receiving portion of the vehicle; stand means for supporting the forward end of the trailer in a rest position; and lifting means carried by the trailer and engageable with the rear wheel means of the vehicle for retracting said rear wheel means from the normal ground engaging position to cause rigid securement of the front portion of said trailer to the trailer receiving portion of said powered vehicle and to permit hauling the trailer using said front wheel mEans and trailer wheel means.
Claim 13
Dependent Claim
152 words
The combination of a powered trailer hauling vehicle having front wheel means, rear wheel means and a trailer receiving portion disposed over the rear wheel means, the rear wheel means being retractably mounted and normally occupying a ground engaging position; a trailer having wheel means for supporting at least a part of the trailer, and further including a front portion constructed and arranged for supporting engagement with the trailer receiving portion of the vehicle; stand means for supporting the forward end of the trailer in a rest position; and lifting means carried by the trailer and engageable with the rear wheel means of the vehicle for retracting said rear wheel means from the normal ground engaging position to cause rigid securement of the front portion of said trailer to the trailer receiving portion of said powered vehicle and to permit hauling the trailer using said front wheel mEans and trailer wheel means.
Claim 14
Dependent Claim
49 words
The combination defined by claim 11, wherein: the rear wheel means of the trailer hauling vehicle comprises an axle operatively connected to the vehicle by spring means; and a pair of wheels rotatably mounted on the axle; and the lifting means is constructed and arranged to engage the axle.
Claim 15
Dependent Claim
20 words
The combination defined by claim 12, wherein the spring means comprises leaf springs normally biasing the axle toward the ground.
Claim 16
Dependent Claim
26 words
The combination as defined by claim 12, wherein the trailer supporting wheel means is mounted rearwardly of the center of longitudinal weight distribution of the trailer.
Claim 17
Dependent Claim
26 words
The combination as defined by claim 12, wherein the axle is engageable with the frame of the trailer hauling vehicle to limit upward retracting movement thereof.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |