Patent US3828953A successfully refreshed from Google Patents.
US3828953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor wheel dolly
Assignee: Individual
•
Filing: 1972-10-05
•
Granted: 1974-08-13
•
Expires: 1992-10-05
Abstract
Abstract A generally U-shaped horizontally disposed dolly including support wheels on the free ends of the leg portions of the dolly journaled for rotation about axes extending between the leg portions and an additional caster wheel assembly journaled from the mid-portion of the bight portion of the dolly extending between the base ends of the legs thereof. A pair of downwardly inclined lifting flaps are pivotally supported from the adjacent sides of the legs and are downwardly convergent and motor means is operatively connected between the U-shaped portion of the dolly at a location disposed in at least general vertical alignment with the caster wheel. The motor means is operatively connected to a vertically shiftable lifting head and downwardly divergent connecting bars are pivotally secured to opposite sides of the lifting head at their upper ends and to the free swinging adjacent lower marginal portions of the lifting flaps at their lower ends, whereby the motor means may be utilized to swing the free swinging edge portions of the flaps upwardly toward horizontal positions. In this manner, a large heavy wheel in upright position with its lower peripheral portion loosely embraced by the flaps may be engaged by the latter and lifted clear of the surface upon which the dolly is disposed.
Inventors
- 👤 F Reznicek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:28
CPC Classifications
B; B66; B66F; B66F5/00; B66F5/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
315 words
A wheel dolly for heavy, large diameter wheels, said dolly including a generally horizontal frame having opposite side elongated longitudinal members interconnected at their rear end portions by means of an elongated transverse member extending and secured therebetween, the front end portions of said longitudinal members being free of bracing members extending therebetween and defining an entrance passageway through which the lower periphery of an upright wheel is received upon the frame being forwardly advanced toward the wheel in an axial direction, said longitudinal members including flap-type structures extending therealong and projecting laterally outwardly of said longitudinal members toward each other, means oscillatably supporting the flap-type structures from said longitudinal members for swinging about axes generally paralleling said longitudinal members and adjacent the remote edges of said flaptype structures, and force means connected between the adjacent free swinging edge portions and said frame operative to simultaneously swing said flap-type structures to elevate the adjacent free swinging marginal edges thereof, each of longitudinal members including an upwardly and outwardly inclined frame, an elongated upwardly and inwardly inclined swing arm pivotally mounted, intermediate its opposite ends, to the free upper end portion of each of said frames for oscillation about an axis generally paralleling said longitudinal members, the upper free ends of said swing arms including cradle members opening toward each other for engaging, embracing and supporting an adjacent peripheral portion of a tire, means connected between each swing arm and the corresponding inclined frame operative to releasably secure said swing arms in adjusted oscillated positions relative to said frames, said upwardly and outwardly inclined frames being pivotally supported at their lower ends from said elongated longitudinal members for oscillation relative thereto about axes extending longitudinAlly of said longitudinal members, said inclined frames and said longitudinal members including coacting means limiting angular displacement of said inclined frames to swing the upper ends thereof away from each other.
Claim 2
Dependent Claim
315 words
A wheel dolly for heavy, large diameter wheels, said dolly including a generally horizontal frame having opposite side elongated longitudinal members interconnected at their rear end portions by means of an elongated transverse member extending and secured therebetween, the front end portions of said longitudinal members being free of bracing members extending therebetween and defining an entrance passageway through which the lower periphery of an upright wheel is received upon the frame being forwardly advanced toward the wheel in an axial direction, said longitudinal members including flap-type structures extending therealong and projecting laterally outwardly of said longitudinal members toward each other, means oscillatably supporting the flap-type structures from said longitudinal members for swinging about axes generally paralleling said longitudinal members and adjacent the remote edges of said flaptype structures, and force means connected between the adjacent free swinging edge portions and said frame operative to simultaneously swing said flap-type structures to elevate the adjacent free swinging marginal edges thereof, each of longitudinal members including an upwardly and outwardly inclined frame, an elongated upwardly and inwardly inclined swing arm pivotally mounted, intermediate its opposite ends, to the free upper end portion of each of said frames for oscillation about an axis generally paralleling said longitudinal members, the upper free ends of said swing arms including cradle members opening toward each other for engaging, embracing and supporting an adjacent peripheral portion of a tire, means connected between each swing arm and the corresponding inclined frame operative to releasably secure said swing arms in adjusted oscillated positions relative to said frames, said upwardly and outwardly inclined frames being pivotally supported at their lower ends from said elongated longitudinal members for oscillation relative thereto about axes extending longitudinAlly of said longitudinal members, said inclined frames and said longitudinal members including coacting means limiting angular displacement of said inclined frames to swing the upper ends thereof away from each other.
Claim 3
Dependent Claim
40 words
The combination of claim 1 wherein said force means comprises an upright hydraulic jack with its base supported from a mid-portion of said transverse member and including a head on the upper end portion of the vertically extendable portion thereof.
Claim 4
Dependent Claim
44 words
The combination of claim 2 including elongated upstanding connecting bars disposed in downwardly divergent relation and having their upper ends pivotally secured to said head, the lower ends of said bars being pivotally secured to the free marginal edge portions of said flap-type structures.
Claim 5
Dependent Claim
59 words
The combination of claim 1 wherein said transverse member includes a laterally and forwardly projecting intermediate mounting portion, said force means being supported from the forward portion of said mounting portion, a caster wheel assembly underlying and supporting said forward portion, the forward ends of said longitudinal members including ground engaging wheel means journaled for rotation about transverse axes.
Claim 6
Dependent Claim
34 words
The combination of claim 4 wherein said intermediate mounting portion also includes a laterally and rearwardly projecting portion, and a second caster wheel assembly underlying and supported from said laterally and rearwardly projecting portion.
Claim 7
Dependent Claim
41 words
The combination of claim 1 wherein said transverse member includes a centrally disposed elongated handle having one end pivotally supported from said transverse member for oscillation about an axis extending longitudinally of said transverse member and horizontally transversely of said handle.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |