Attachable dual drive wheel

Claim 2

In a system for securing a rim of an auxiliary wheel to a rim of a drive wheel of a traction vehicle, the combination comprising an annular flange secured to and extending radially inwardly of said auxiliary wheel rim and providing a plurality of apertures; and a plurality of anchor lugs removably attachable to said flange by means of said apertures, each anchor lug being in the form of a saddle with two depending side walls, one adapted to engage said auxiliary wheel rim at a position intermediate said flange and said drive wheel rim, and the other depending side wall of said anchor member extending on the other side of said flange and bearing against said flange at a location between an associated aperture and said auxiliary wheel when said anchor means is in assembled relation with said flange.

Claim 3

In a system for securing a rim of an auxiliary wheel to a rim of a drive wheel of a traction vehicle wherein said drive wheel is provided with a plurality of bolt fasteners, each pivotally connected to said auxiliary wheel rim at locations spaced equally from the drive axis of said rim and at equal angular displacements about said rim, the improvement comprising: a retainer flange secured to said auxiliary wheel rim and extending inwardly thereof in a plane perpendicular to said driVe axis, said retainer flange defining a plurality of apertures, at least some of said apertures being offset relative to the points of location of said bolt fasteners to said drive wheel rim; an anchor lug for each of said fastener means and adapted to be secured to the distal end thereof, each anchor lug including means for releasably attaching to said retainer flange at one of said apertures and including a curved bearing surface for engaging the surface of said retainer flange remote from said drive wheel rim when said rims are assembled together, said curved bearing surface permitting alignment of said lug with an associated bolt fastener when tension is applied to secure said fastener to said lug.

Claim 4

In a system for securing a rim of an auxiliary wheel to a rim of a drive wheel of a traction vehicle wherein said drive wheel is provided with a plurality of bolt fasteners, each pivotally connected to said auxiliary wheel rim at locations spaced equally from the drive axis of said rim and at equal angular displacements about said rim, the improvement comprising: a retainer flange secured to said auxiliary wheel rim and extending inwardly thereof in a plane perpendicular to said driVe axis, said retainer flange defining a plurality of apertures, at least some of said apertures being offset relative to the points of location of said bolt fasteners to said drive wheel rim; an anchor lug for each of said fastener means and adapted to be secured to the distal end thereof, each anchor lug including means for releasably attaching to said retainer flange at one of said apertures and including a curved bearing surface for engaging the surface of said retainer flange remote from said drive wheel rim when said rims are assembled together, said curved bearing surface permitting alignment of said lug with an associated bolt fastener when tension is applied to secure said fastener to said lug.

Claim 5

The system of claim 2 wherein each lug further comprises a cylindrical sleeve for receiving an associated bolt fastener, an upper wall located centrally of said flange and crossing thereover, and a rear wall depending from said upper wall between said flange and said drive wheel rim, said rear wall including a lower bearing surface engaging the rim of said auxiliary wheel to brace said lug against the tension of said bolt by applying a force radially to said rim.

Claim 8

The system of claim 4 wherein said locating means comprises an annular retainer flange secured to said auxiliary wheel rim and providing a first and a second set of apertures located respectively in a clockwise and a counterclockwise direction relative to the base location of their associated fastener means; and wherein said anchor means comprises an anchor lug for each of said fastener means, each anchor lug including a pin receivable in an associated aperture of said flange, and a bearing surface curved outwardly about a radial line of said wheel and located on the side of said flange remote from said drive wheel rim and located between an associated aperture of said flange and the rim of said auxiliary wheel whereby said curved bearing surface of each anchor lug engages the outer surface of said flange adjacent said auxiliary rim and permits alignment of said lug with an associated fastener means when tensioned thereto.

Claim 9

The system of claim 5 wherein each of said lugs is generally saddle-shaped, having first and second generally parallel walls and an inter-connecting top wall, said second wall being provided with an inwardly extending pin for fitting through an aperture in said retainer flange and a convexly curved bearing surface for engaging said flange between an aperture and the rim of said auxiliary wheel, said first wall further providing a bearing surface engaging the rim of said auxiliary wheel between said retainer flange and the drive wheel whereby force will be transmitted directly to said rim through said bearing surfaces.