Abstract: A shuttle valve assembly, comprising a valve housing containing first, second and third ports, and a cavity in the housing, a poppet shiftable in the cavity between a first position and a second position, the poppet in its first position directing flow between the first port and the second port, communication between the second port and third port then being blocked, the poppet in its second position directing flow between the third port and the second port, communication between the second port and first port then being blocked, and a friction responsive holder acting to hold the poppet in its first position until fluid pressure shifts the poppet to its second position, and to hold the poppet in its second position until fluid pressure shifts the poppet to its first position.

Abstract: A portable apparatus for retaining a bicycle in the manner of a conventional bicycle repair stand, and which can be used in conjunction with a conventional sports rack attached to the roof of a car or van. The apparatus can be attached to the conventional bicycle sports rack which is attached to the roof of a car and therefore utilizes the car and the sports rack as the supporting body framework to hold and support a bicycle in any desired orientation. The apparatus comprises an elongated member whose exterior cross-sectional dimensions are slightly smaller than the interior cross-sectional dimensions of the elongated base of a conventional sports rack attached to the roof of a vehicle, and is fitted into the interior section of the elongated base of the sports rack and retained therein by a press fit. Additional portions attached to the elongated section support a clamping mechanism which can retain a portion of a bicycle such as the horizontal tube of the frame.

Abstract: A car top bicycle carrier in which a bicycle is supported in an upright, fully assembled position. There is a generally V-shaped trough into which the bicycle tires are placed and one or more straps for retaining the tires in the trough. A U-shaped stanchion is provided with a clamping mechanism for clamping the upper part of one of the bicycle wheels so as to retain the bicycle in an upright position and against movement longitudinally of the trough. The clamping mechanism can be adapted to bicycles with relatively large wheels and to bicycles with relatively small wheels.