Apparatus for immobilizing a vehicle

Claim 1

An apparatus for effectively immobilizing a rubber-tired wheeled vehicle, comprising: first and second opposed transverse elements each adapted to frictionally abut a tire periphery at diametrically opposite locations relative to the wheel axis; a pair of complementary slide extensions formed integrally with the respective transverse elements at right angles to said elements, said extensions overlapping one another for radial adjustment of element spacing relative to one another with respect to the wheel axis; releasable joining means operably engageable between the pair of slide extensions for selectively fixing their positions relative to one another; means projecting radially outward from one of said elements for preventing normal rotation of a wheel on a vehicle when said elements are in abutment with the tire periphery by providing an outer obstruction to such rotation; and complementary means on said pair of slide extensions for permitting the application of manual leverage between them for radially tightening the transverse elements against the tire periphery.

Claim 2

An apparatus for effectively immobilizing a rubber-tired wheeled vehicle, comprising: first and second opposed transverse elements each adapted to frictionally abut a tire periphery at diametrically opposite locations relative to the wheel axis; a pair of complementary slide extensions formed integrally with the respective transverse elements at right angles to said elements, said extensions overlapping one another for radial adjustment of element spacing relative to one another with respect to the wheel axis; releasable joining means operably engageable between the pair of slide extensions for selectively fixing their positions relative to one another; means projecting radially outward from one of said elements for preventing normal rotation of a wheel on a vehicle when said elements are in abutment with the tire periphery by providing an outer obstruction to such rotation; and complementary means on said pair of slide extensions for permitting the application of manual leverage between them for radially tightening the transverse elements against the tire periphery.

Claim 5

An apparatus for effectively immobilizing a rubber-tired wheeled vehicle by engagement of the periphery of one tire, comprising: first and second opposed arcuate plates each having concave inner surfaces complementary to a tire periphery; first and second complementary extensions formed integrally with the first and second arcuate plates respectively and extending inward along corresponding side edges of the respective plates, the extensions being formed from smooth-surfaced sheet material recessed to provide clearance for a wheel assembly and projecting wheel covers; means for operably joining said extensions in an overlapping relationship with respect to one another with the respective plates diametrically opposed to one another; an inwardly protruding lip along the remaining side edge of each plate adapted to retain the plate in place on a tire; a smooth-surfaced solid cover plate removably mounted to one of said extensions for preventing manual access to said joining means when the cover plate is in place on said one slide extension; locking means on said cover plate and said one extension for fixing the cover plate to said one extension; and protruding means on one of said plates extending outward oppositely to the extension thereof for obstructing rotation of a wheel when said plates are in abutment with the tire periphery of the wheel.

Claim 6

An apparatus for effectively immobilizing a rubber-tired wheeled vehicle by engagement of the periphery of one tire, comprising: first and second opposed arcuate plates each having concave inner surfaces complementary to a tire periphery; first and second complementary extensions formed integrally with the first and second arcuate plates respectively and extending inward along corresponding side edges of the respective plates, the extensions being formed from smooth-surfaced sheet material recessed to provide clearance for a wheel assembly and projecting wheel covers; means for operably joining said extensions in an overlapping relationship with respect to one another with the respective plates diametrically opposed to one another; an inwardly protruding lip along the remaining side edge of each plate adapted to retain the plate in place on a tire; a smooth-surfaced solid cover plate removably mounted to one of said extensions for preventing manual access to said joining means when the cover plate is in place on said one slide extension; locking means on said cover plate and said one extension for fixing the cover plate to said one extension; and protruding means on one of said plates extending outward oppositely to the extension thereof for obstructing rotation of a wheel when said plates are in abutment with the tire periphery of the wheel.