Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
243 words
A device adapted for being mounted on an article to selectively support the article for transport or to hold the article in a stable rest position; said device comprising means for attachment to an article which is to be supported on said device; a frame rotatably supported by said means, a wheel supported by said frame; flat support means mounted in said frame for vertical displacement between a retracted position above said wheel and a lowered position below said wheel, said article resting on said wheel via said frame when the flat support means is retracted, and resting on said flat support means when the latter is in lowered position; actuator means on said frame for raising and lowering the flat support means; an adjustment bolt rotatably mounted in said frame and coupled to said actuator means; an adjusting nut threadably mounted on said bolt, said flat support means being secured to said nut and being supported in said frame so as to be nonrotatable therein and displaced upwardly and downwardly for opposite directions of rotation of said bolt; said actuator means comprising a rotatable member extending externally of said frame, said rotatable member including a gear portion; a gear secured to said bolt and in mesh with said gear portion of the rotatable member whereby rotation of the latter will cause rotation of said bolt; and said flat support means having a notch in which a portion of said wheel is received.
Claim 2
Independent Claim
243 words
A device adapted for being mounted on an article to selectively support the article for transport or to hold the article in a stable rest position; said device comprising means for attachment to an article which is to be supported on said device; a frame rotatably supported by said means, a wheel supported by said frame; flat support means mounted in said frame for vertical displacement between a retracted position above said wheel and a lowered position below said wheel, said article resting on said wheel via said frame when the flat support means is retracted, and resting on said flat support means when the latter is in lowered position; actuator means on said frame for raising and lowering the flat support means; an adjustment bolt rotatably mounted in said frame and coupled to said actuator means; an adjusting nut threadably mounted on said bolt, said flat support means being secured to said nut and being supported in said frame so as to be nonrotatable therein and displaced upwardly and downwardly for opposite directions of rotation of said bolt; said actuator means comprising a rotatable member extending externally of said frame, said rotatable member including a gear portion; a gear secured to said bolt and in mesh with said gear portion of the rotatable member whereby rotation of the latter will cause rotation of said bolt; and said flat support means having a notch in which a portion of said wheel is received.
Claim 3
Dependent Claim
49 words
A device as claimed in claim 1 wherein said frame has an axis of rotation relative to the means for attachment to the article, said bolt being offset on one side of said axis of rotation, said wheel being offset on the other side of said axis of rotation.
Claim 4
Dependent Claim
22 words
A device as claimed in claim 2 comprising ball bearing means between said frame and said means which attaches to the article.
Claim 5
Dependent Claim
19 words
A dEvice as claimed in claim 2 wherein said flat support means is constituted of an elastic, vibration-damping material
Claim 6
Dependent Claim
21 words
A device as claimed in claim 4 wherein said rotatable member of the actuator means is a wheel encircling said frame.
Claim 7
Dependent Claim
22 words
A device as claimed in claim 5 comprising thrust members supported in said frame and engaging said gear on opposite sides thereof.
Claim 8
Dependent Claim
41 words
A device as claimed in claim 5 wherein said flat support means is provided with two opposed slots and said adjusting nut includes arms engaged in said slots such that said nut and said support means are coupled for common rotation.