Combination caster and fixed support
First Claim
1. A combined dual wheel caster and support pad assembly comprising;
- horn means, a wheel supported on each side of the horn means for rotation, a pad support mounted for vertical adjusting movement in the horn means and having a lower thrust surface, a pad mounted on the pad support for pivotal movement, said pad support being movable downwardly to engage the thrust surface with the pad to lower the pad into engagement with the floor and raise the wheels from the floor, and means for locking the pad in an upward tilting position so that the pad does not interfere with obstacles when the wheels operatively engage the floor.
4 Assignments
0 Petitions
Accused Products
Abstract
A combination caster and fixed support that supports an article either for rolling motion on a dual wheel assembly or alternatively supports the article on a floor engaging foot that raises the caster wheels from the floor. A central horn, having a vertical swivelling pintle, carries wheels on the opposite sides thereof supported on a common axle that permits the wheels to go up and down a limited distance relative to the horn to compensate for uneven floors. A threaded pad vertical support rod is received centrally in the horn between the wheels and carries a universally mounted channel-shaped pad at its lower end that selectively engages the floor as the threaded rod is lowered to raise the caster wheels off the floor. In the raised position of the foot the pad is locked in a tilted position between abutments on the lower end of the support rod and a lower surface on the horn so that the pad may easily pass over inclined floor surfaces.
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Citations
17 Claims
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1. A combined dual wheel caster and support pad assembly comprising;
- horn means, a wheel supported on each side of the horn means for rotation, a pad support mounted for vertical adjusting movement in the horn means and having a lower thrust surface, a pad mounted on the pad support for pivotal movement, said pad support being movable downwardly to engage the thrust surface with the pad to lower the pad into engagement with the floor and raise the wheels from the floor, and means for locking the pad in an upward tilting position so that the pad does not interfere with obstacles when the wheels operatively engage the floor.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. A combined dual wheel caster and support pad, comprising;
- a horn member, a pintle assembly mounted in the horn member and adapted to be received in an article to be supported, an axle mounted in the horn member and extending laterally outwardly of the horn member, a wheel mounted on each of the laterally extending portions of the axle on the opposite sides of the horn member, said axle being mounted in the horn member for limited pivotal movement in a vertical plane so that both wheels may have rolling contact with the floor even though the floor may be uneven, and a pad mounted for movement in the horn member and selectively engageable with the floor to raise the wheels from the floor.
- View Dependent Claims (8, 9)
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10. A dual wheel caster comprising;
- a horn member, a pintle assembly mounted in the horn member, a pintle assembly mounted in the horn member and adapted to be received in an article to be supported, an axle mounted in the horn member and extending laterally outwardly of the horn member, and a wheel mounted on each of the laterally extending portions of the axle on the opposite sides of the horn member, said axle being mounted in the horn member for limited pivotal movement in a vertical plane so that both wheels may have rolling contact with the floor even though the floor may be uneven.
- View Dependent Claims (11, 12)
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13. A caster assembly, comprising;
- a horn member, a pintle mounted in the horn member adapted to be received by an article to be supported, an axle offset from the axis of the pintle mounted generally horizontally in the horn member, a bore in the horn member having a noncircular cross-section for receiving the axle, said axle having an enlarged central portion engaging the noncircular cross-section of the horn member bore that defines a pivot for the pivotal movement of the axle about a point in a vertical plane extending through the axis of the axle, a wheel rotatably mounted on the ends of the axle and on the opposite sides of the horn member so that when the wheels encounter an unevenness in the floor the axle will tilt permitting one of the wheels to be raised or lowered to maintain rolling contact of both wheels with the floor, an adjusting sleeve in the pintle assembly mounted for rotational movement with respect to the horn member and having an internally threaded bore, a rod threadedly received in the sleeve bore so that upon rotation of the sleeve the rod may be adjusted vertically, a pair of spaced abutments on the lower end of the rod and defining thrust surfaces, and a pad mounted on the rod between the spaced abutments with the abutments being sufficiently spaced so that the pad has limited pivotal movement with respect thereto, said horn member having a projection thereon engagable with the pad upon upward movement thereof to position and hold the pad in a tilted position extending upwardly in the direction of normal movement of the caster assembly.
- View Dependent Claims (17)
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14. A caster assembly, comprising;
- a horn member, a pintle mounted in the horn member adapted to be received by an article to be supported, an axle offset from the axis of the pintle mounted generally horizontally in the horn member, a bore in the horn member having a noncircular cross-section for receiving the axle, said axle having an enlarged central portion engaging the noncircular cross-section of the horn member bore that defines a pivot for the pivotal movement of the axle about a point in a vertical plane extending through the axis of the axle, and a wheel rotatably mounted on the ends of the axle and on the opposite sides of the horn member so that when the wheels encounter an unevenness in the floor the axle will tilt permitting one of the wheels to be raised or lowered to maintain rolling contact of both wheels with the floor.
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15. A caster assembly, comprising;
- a horn member, a pintle mounted in the horn member adapted to be received by an article to be supported, an axle offset from the axis of the pintle mounted generally horizontally in the horn member, an adjusting sleeve mounted for rotational movement with respect to the horn member and having an internally threaded bore, a rod threadedly received in the sleeve bore so that upon rotation of the sleeve the rod may be adjusted vertically, a pair of spaced abutments on the lower end of the rod and defining thrust surfaces, and a pad mount around the rod between the spaced abutments. with the abutments being sufficiently spaced so that the pad has limited pivotal movement with respect thereto, said horn member having a projection thereon engageable with the pad upon upward movement thereof to position and hold the pad in a tilted position extending upwardly in the direction of normal movement of the caster assembly.
- View Dependent Claims (16)
Specification