Patent US3738672A successfully refreshed from Google Patents.
US3738672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dolly for moving vehicles
Assignee: Individual
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Filing: 1971-09-20
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Granted: 1973-06-12
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Expires: 1991-09-20
Abstract
Abstract A dolly type device for manually moving house and boat trailers, aircraft and other vehicles has a single ground-engaging wheel mounted in a supporting frame adapted to be swivelly connected to the vehicle to be moved, the wheel and the supporting frame having mounted thereon elements of a pawl and ratchet type mechanism for driving the dolly either forwardly or rearwardly by means of a manually actuated jacking handle which also serves to steer the dolly. The driving mechanism also permits the dolly to freewheel in the selected direction of movement while preventing roll-back, and can be so adjusted as to prevent movement in either direction.
Inventors
- 👤 V Dalton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:08
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/58; B60D1/66; B60D1/665; B60D1/24; B60D1/246; B62; B62B; B62B3/00; B62B3/04; B62B3/06; B62B3/0606; B62B5/00; B62B5/0026; B64; B64F; B64F1/00; B64F1/22
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
278 words
A device for attachement to and manually moving a vehicle comprising a supporting frame, means for detachably connecting said frame to a vehicle to be moved for swivelling movement about a vertical axis, a ground-engaging wheel supported by said frame for rotation about a horizontal axis, means for manually driving said wheel in a forward or rearward direction as selected by the operator, said driving means including a driven member fixed to said wheel, a pair of yoke members mounted on said frame for oscillatory movement in a vertical plane about the horizontal axis of said wheel, one of said yoke members extending forwardly of the wheel and the other extending rearwardly thereof, a handle connected to and extending forwardly of the forward yoke member for moving said yoke member upwardly and downwardly about said horizontal axis and swivelling said supporting frame and wheel about said vertical axis, a linkage carried by said supporting frame and interconnecting said front and rear yoke members, said linkage being so constructed and arranged that said rear yoke member is moved upwardly and downwardly simultaneously with, and in the same direction as, said fronT yoke member, wheel driving members carried by said front and rear yoke members for engagement with said driven member, each of said driving members being individually adjustable so as to engage the driven member at a position either above or below the associated yoke member as selected by the operator, and yieldable means biasing each of said driving members toward its selected adjusted position whereby each driving member may be overrun by said driven member when the other driving member is applying driving force to said driven member.
Claim 2
Independent Claim
278 words
A device for attachement to and manually moving a vehicle comprising a supporting frame, means for detachably connecting said frame to a vehicle to be moved for swivelling movement about a vertical axis, a ground-engaging wheel supported by said frame for rotation about a horizontal axis, means for manually driving said wheel in a forward or rearward direction as selected by the operator, said driving means including a driven member fixed to said wheel, a pair of yoke members mounted on said frame for oscillatory movement in a vertical plane about the horizontal axis of said wheel, one of said yoke members extending forwardly of the wheel and the other extending rearwardly thereof, a handle connected to and extending forwardly of the forward yoke member for moving said yoke member upwardly and downwardly about said horizontal axis and swivelling said supporting frame and wheel about said vertical axis, a linkage carried by said supporting frame and interconnecting said front and rear yoke members, said linkage being so constructed and arranged that said rear yoke member is moved upwardly and downwardly simultaneously with, and in the same direction as, said fronT yoke member, wheel driving members carried by said front and rear yoke members for engagement with said driven member, each of said driving members being individually adjustable so as to engage the driven member at a position either above or below the associated yoke member as selected by the operator, and yieldable means biasing each of said driving members toward its selected adjusted position whereby each driving member may be overrun by said driven member when the other driving member is applying driving force to said driven member.
Claim 3
Dependent Claim
83 words
A device as claimed in claim 1 wherein said linkage comprises an arm fixed to and extending upwardly from said front yoke member and carrying a horizontally extending pin, a drive link pivotally supported adjacent one end thereof on said frame and having an elongated slot adjacent its other end receiving said pin, said drive link also having an arm extending laterally therefrom adjacent its pivotal axis, and a connector link connecting the arm on said drive link and the rear yoke member.
Claim 4
Dependent Claim
134 words
A device as claimed in claim 1 wherein each of said driving members is pivotally mounted intermediate its ends on the associated yoke member and each of its ends is so formed as to engage said driven member, and wherein said yieldable biasing means comprises a pair of elongated coil springs each fixed at one end to one of said driving members at the pivotal axis thereof and having its other end in lateral engagement with one or the other of two positioning pins fixed to the associated yoke member on opposite sides of a line joining the pivotal axis of said driving member and the horizontal axis of said wheel, whereby said coil springs also serve as manually operable means for adjusting the positions of said driving members relative to said driven member.
Claim 5
Dependent Claim
62 words
A device as claimed in claim 1 wherein each of said driving members comprises an arm pivotally mounted on the associated yoke member and carrying a projection adapted to engage the driven member, and a lever fixed to said arm for manually moving said driving member from one of said positions to the other against the force of said yieldable biasing means.
Claim 6
Independent Claim
331 words
A device for attachment to and manually moving a vehicle comprising a supporting frame, means for detachably connecting said frame to a vehicle to be moved for swivelling movement about a vertical axis, a ground-engaging wheel supported by said frame for rotation about a horizontal axis, means for manually driving said wheel in a forward or rearward direction as selected by the operator, said driving means including a driven member fixed to said wheel, a pair of substantially U-shaped yoke members mounted on said frame for oscillatory movement in a vertical plane about the horizontal axis of said wheel, one of said yoke members extending forwardly of the wheel and the other extending rearwardly thereof, the outer radius of each yoke member being greater than that of said wheel so that the wheel is surrounded by each yoke member, a handle connected to and extending forwardly of the forward yoke member for moving said yoke member upwardly and downwardly about said horizontal axis and swivelling said supporting frame and wheel about said vertical axis, a linkage carried by said supporting frame and interconnecting said front and rear yoke members, said linkage being so constructed and arranged that said rear yoke member is moved upwardly and downwardly simultaneously with, and in the same directions as, said front yoke member, wheel driving members carried by said front and rear yoke members for engagement with said driven member, each of said driving members being individually adjustable so as to engage the driven member at a position either above or below the associated yoke member as selected by the operator, and yieldable means biasing each of said driving members toward its selected adjusted position whereby each driving member may be overrun by said driven member when the other driving member is applying driving force to said driven meMber, the driven member being a sprocket wheel and said driving members being provided with projections so shaped as to engage the intertooth spaces of said sprocket wheel.
Claim 7
Independent Claim
331 words
A device for attachment to and manually moving a vehicle comprising a supporting frame, means for detachably connecting said frame to a vehicle to be moved for swivelling movement about a vertical axis, a ground-engaging wheel supported by said frame for rotation about a horizontal axis, means for manually driving said wheel in a forward or rearward direction as selected by the operator, said driving means including a driven member fixed to said wheel, a pair of substantially U-shaped yoke members mounted on said frame for oscillatory movement in a vertical plane about the horizontal axis of said wheel, one of said yoke members extending forwardly of the wheel and the other extending rearwardly thereof, the outer radius of each yoke member being greater than that of said wheel so that the wheel is surrounded by each yoke member, a handle connected to and extending forwardly of the forward yoke member for moving said yoke member upwardly and downwardly about said horizontal axis and swivelling said supporting frame and wheel about said vertical axis, a linkage carried by said supporting frame and interconnecting said front and rear yoke members, said linkage being so constructed and arranged that said rear yoke member is moved upwardly and downwardly simultaneously with, and in the same directions as, said front yoke member, wheel driving members carried by said front and rear yoke members for engagement with said driven member, each of said driving members being individually adjustable so as to engage the driven member at a position either above or below the associated yoke member as selected by the operator, and yieldable means biasing each of said driving members toward its selected adjusted position whereby each driving member may be overrun by said driven member when the other driving member is applying driving force to said driven meMber, the driven member being a sprocket wheel and said driving members being provided with projections so shaped as to engage the intertooth spaces of said sprocket wheel.
Claim 8
Dependent Claim
20 words
A device as claimed in claim 5 including means for limiting the upward and downward movements of said yoke members.
Claim 9
Independent Claim
302 words
A device for attachment to and manually moving a vehicle comprising a fork-like supporting frame, means for detachably connecting said frame to a vehicle to be moved for swivelling movement about a vertical axis, a single ground-engaging wheel supported by said frame for rotation about a horizontal axis, means for manually driving said wheel in a forward or rearward direction as selected by the operator, said driving means including a driven sprocket wheel member fixed to one side of said wheel, a pair of substantially U-shaped yoke members mounted on said frame for oscillatory movement in a vertical plane about the axis of said wheel, one of said yoke members extending forwardly of the wheel and other extending rearwardly thereof, a jacking handle removably connected to and extending forwardly of the front yoke member for moving said yoke member upwardly and downwardly about said horizontal axis and swivelling said supporting frame and wheel about said vertical axis, a linkage carried by said supporting frame at the side of said wheel opposite said sprocket wheel member and interconnecting said front and rear yoke members, said linkage being so constructed and arranged that said rear yoke member is moved upwardly and downwardly simultaneously with, and in the same direction as, said front yoke member, wheel driving pawl members carried by said front and rear yoke members for engagement with said sprocket wheel member, each of said pawl members being individually adjustable so as to engage the sprocket wheel member at a position either above or below the associated yoke member as selected by the operator, and yieldable means biasing each of said pawl memers toward its selected position whereby each pawl member may be overrun by said sprocket wheel member when the other pawl member is applying driving force to said sprocket wheel member.
Claim 10
Independent Claim
302 words
A device for attachment to and manually moving a vehicle comprising a fork-like supporting frame, means for detachably connecting said frame to a vehicle to be moved for swivelling movement about a vertical axis, a single ground-engaging wheel supported by said frame for rotation about a horizontal axis, means for manually driving said wheel in a forward or rearward direction as selected by the operator, said driving means including a driven sprocket wheel member fixed to one side of said wheel, a pair of substantially U-shaped yoke members mounted on said frame for oscillatory movement in a vertical plane about the axis of said wheel, one of said yoke members extending forwardly of the wheel and other extending rearwardly thereof, a jacking handle removably connected to and extending forwardly of the front yoke member for moving said yoke member upwardly and downwardly about said horizontal axis and swivelling said supporting frame and wheel about said vertical axis, a linkage carried by said supporting frame at the side of said wheel opposite said sprocket wheel member and interconnecting said front and rear yoke members, said linkage being so constructed and arranged that said rear yoke member is moved upwardly and downwardly simultaneously with, and in the same direction as, said front yoke member, wheel driving pawl members carried by said front and rear yoke members for engagement with said sprocket wheel member, each of said pawl members being individually adjustable so as to engage the sprocket wheel member at a position either above or below the associated yoke member as selected by the operator, and yieldable means biasing each of said pawl memers toward its selected position whereby each pawl member may be overrun by said sprocket wheel member when the other pawl member is applying driving force to said sprocket wheel member.
Claim 11
Dependent Claim
115 words
A device as claimed in claim 7 wherein said linkage comprises an arm fixed to and extending upwardly from said front yoke member adjacent the pivotal axis thereof and carrying a pin extending horizontally towards said wheel, a drive link pivotally supported adjacent one end thereof on said frame and having an elongated slot adjacent its other end receiving said pin, said drive link also having an arm extending laterally therefrom adjacent its pivotal axis and carrying a pin extending horizontally away from said wheel, a pin fixed to said rear yoke member extending horizontally away from said wheel, and a connector link connecting the pins on said drive link and said rear yoke member.
Claim 12
Dependent Claim
151 words
A device as claimed in claim 7 wherein each of said pawl members is an arcuate arm pivotally mounted intermediate its ends on the associated yoke member and carrying at each end a protuberance so formed as to engage the intertooth spaces of said sprocket wheel member, and wherein said yieldable biasing means comprises a pair of elongated coil springs each fixed at one end to one of said pawl members at the pivotal axis thereof and having its other end in lateral engagement with one or the other of two positioning pins fixed to the associated yoke member and projecting outwardly away from said wheel on opposite sides of a line joining the pivotal axis of said pawl member and the horizontal axis of said wheel, whereby said coil springs also serve as manually operable means for adjusting the positions of said pawl members relative to said sprocket wheel member.
Claim 13
Dependent Claim
77 words
A device as claimed in claim 7 wherein each of said pawl members comprises an arm pivotally mounted at one end thereof on the associated yoke member and carrying at its other end a laterally projecting pin adapted to engage the intertooth spaces of the sprocket wheel member, and a lever fixed to said arm for manually moving said pawl member from one of said positions to the other against the force of said yieldable biasing means.
Claim 14
Dependent Claim
20 words
A device as claimed in claim 7 including means for limiting the upward and downward movements of said yoke members.
Claim 15
Dependent Claim
46 words
A device as claimed in claim 8 wherein said elongated slot in said drive link is closed at both ends and so limits movement of the pin carried by the arm fixed to said front yoke member as to limit the movement of said yoke member.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |