US3637236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling device of trailers
Assignee: Individual
•
Filing: 1970-06-03
•
Granted: 1972-01-25
•
Expires: 1990-06-03
Abstract
Abstract A carriage having a pair of wheels, each pair being rollingly mounted to associated axles which, in turn, are mounted by pivot assemblies to the carriage. Towing and steering levers are coupled to each of the pivot assemblies for respectively towing the carriage and steering its associated axle. The axles are mechanically coupled to transmit rotational movement therebetween. The towing and steering levers of either end of the carriage may be selectively joined at their free ends when being used to pull the carriage thereby increasing the flexibility of use of the carriage by permitting either end of the carriage to be employed as the end to be pulled. Connection between levers of a carriage and trailer or a carriage and another trailer is provided for by a suitable coupling assembly. The towing levers may be adjusted to appropriate lengths to suit particular needs.
Inventors
- 👤 Shusuke Shimoji
- 👤 Yasuyuki Takeshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:23
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/02; B60D1/025; B62; B62D; B62D13/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
235 words
In a trailer having two wheel axles each pivoted at its center to the chassis of the trailer and a tie rod diagonally extending between the two wheel axles for their connection to each other, a device for coupling the trailer with other vehicles comprising a pair of first levers each fix to the axle and extending from the center of the wheel axle oppositely to each other, a pair of second levers each rotatably connected at an end thereof to the chassis of the trailer in axial alignment with the pivot of the respective wheel axle, third levers each slidably disposed in said second lever and having joint means at the outer free end thereof for the connection with the other vehicle, means for registering said third lever in its extended or retracted position, a cam member slidably carried and guided by the other end portion of said second lever, handle means for operating said cam member, a vertical rod slidably supported by said other end portion of said second lever, spring means for biasing said vertical rod toward said cam member, a female member provided on the outer free end of said first lever for receiving an end of said vertical rod when the rod is projected from said second lever and handle means for operating said first lever so as to adjust its position to engage said female member with said rod.
Claim 2
Dependent Claim
235 words
In a trailer having two wheel axles each pivoted at its center to the chassis of the trailer and a tie rod diagonally extending between the two wheel axles for their connection to each other, a device for coupling the trailer with other vehicles comprising a pair of first levers each fix to the axle and extending from the center of the wheel axle oppositely to each other, a pair of second levers each rotatably connected at an end thereof to the chassis of the trailer in axial alignment with the pivot of the respective wheel axle, third levers each slidably disposed in said second lever and having joint means at the outer free end thereof for the connection with the other vehicle, means for registering said third lever in its extended or retracted position, a cam member slidably carried and guided by the other end portion of said second lever, handle means for operating said cam member, a vertical rod slidably supported by said other end portion of said second lever, spring means for biasing said vertical rod toward said cam member, a female member provided on the outer free end of said first lever for receiving an end of said vertical rod when the rod is projected from said second lever and handle means for operating said first lever so as to adjust its position to engage said female member with said rod.
Claim 3
Dependent Claim
46 words
A coupling device of trailers as claimed in claim 1 wherein the joint means for connection with other vehicle is a coupling having a pin and a for engagement with the corresponding hole and pin, respectively, of the coupling of the other vehicle of similar construction.
Claim 4
Dependent Claim
60 words
A coupling device of trailers as claimed in claim 1 wherein the means for registering the third lever in its extended or retracted position consists of a pin slidably carried by the second lever and openings provided on the third lever at a point near the outer end portion and at a point near the inner end portion thereof, respectively.
Claim 5
Dependent Claim
41 words
A coupling device of trailers as claimed in claim 1 wherein the cam member extends at right angles to the axis of the second lever and slidably carried by a guide member secured to the outer end of the second lever.
Claim 6
Dependent Claim
35 words
A coupling device of trailers as claimed in claim 1 wherein the cam member is a plate having a notch on the upper side thereof for engagement with the slot underside of the vertical rod.
Claim 7
Dependent Claim
36 words
A coupling device of trailers as claimed in claim 5 wherein the notch has a portion flared upwardly, which portion serves to lift the vertical rod therealong when the cam plate is driven to slide longitudinally.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |