Vehicle anti-skid mechanisms
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
Abstract
A vehicle anti-skid mechanism is a wheel attachment and fits on the outside of a vehicle wheel. The mechanism includes a central portion having an inner pair of plates between an outer pair of plates and tread members pivoted to each pair of plates. Turning the inner pair of plates relative to the outer plates displaces active portions of the tread members outwardly to more or less ground engaging positions. The tread members define the periphery of the mechanism and are configured to interfit with one another in their withdrawn inoperative positions. Hydraulic piston assemblies are mounted around the hub of the mechanism and connected to the inner pair of plates.
Claims28
A traction attachment for a vehicle wheel having a hub, said attachment comprising a central portion connected to said hub;
- a plurality of tread members, each of said tread members including an inner fastening portion pivotally mounted to said central portion and an outer tread portion connected to said inner fastening portion;
- and setting means interconnecting said central portion and each of said fastening portions for simultaneously pivoting all of said tread members between an inoperative, withdrawn position and operative, ground engaging positions;
- each of said fastening portions including an outer flat portion and each of said tread portions including an inner flat portion, said inner flat portion of each tread member being in abutting relationship with said outer flat portion of an adjacent tread member in said inoperative withdrawn position whereby said tread members form a closed wall around said central portion;
- said setting means including at least one hydraulic piston and cylinder assembly housed within said central portion.
A vehicle anti-skid mechanism comprising an attachment for a vehicle wheel having a hub, said mechanism being a wheel-shaped assembly of tread members pivoted to a central portion and a first polygonal part of said portion being rotatable about an axis, means connected to turn said first part about said axis and pivot said tread members about corresponding fixed pivots on a second polygonal part of the central portion outwardly with respect to said axis, each tread member having a foot-shaped tread portion and a fastening portion, the angle of inclination between each fastening portion and corresponding tread portion being an obtuse angle directed towards the axis of rotation of said assembly, said angle being about equal in magnitude to the angular corners of said second part.
An anti-skid wheel-shaped attachment and mechanism for a vehicle wheel having a hub, said mechanism comprising an assembly of tread members pivoted to a central portion and a part of said portion being rotatable about an axis, means connected to turn said part about said axis and pivot said members about corresponding fixed pivots on said central portion outwardly with respect to said axis, each tread member having a foot-shaped tread portion and a fastening portion, the free end of each tread portion being bent over to form a toe and said toe having a detachable wear-resistant plate.
Dependencies are inferred from the claim text.