Abstract: A modular suspension strut apparatus provides a bicycle with a relocatable center of gravity to adjust the bicycle to the rider and to terrain conditions. The combined center of gravity of a bicycle and rider is adjustable by moving and clamping a strut within a strut tube. A crank axle housing at the bottom of the strut and a seat post at the top are shifted vertically, while maintaining a fixed seat axle distance. The strut is resiliently mounted within the strut tube by an internal or external spring or springs to absorb shocks. Spring force is adjusted by adjusting an air pressure with an external air pump or on board pumps. Spring forces may be adjusted while seated or in motion by turning knobs or handwheel rings and/or by other means. Strut movement within the strut tube is limited to axial reciprocation in a preset range. Elastomeric rings prevent shock at limits of the strut movements. The strut tube is made of three joined parts, a center tube and top and base guides.

Abstract: An energy-absorbing apparatus for a bicycle frame maintains critical spatial relationships by allowing the seat and the pedal assembly to move slightly, together as a unit, relative to the bicycle frame proper. A telescoping portion of the apparatus has an inner tube housed inside an outer tube. The inner tube has a seat post connected to its top end and a pedal crank axle housing connected to the bottom end. The outer tube is in a fixed, integral relationship with the other frame members. Any of a number of combinations and variations of adjustable spring/damper means isolate the inner tube from the outer tube. Numerous features, including dust boots and a rider-activated keyway lock, can be incorporated into the frame design. The telescoping design reduces impact forces without causing undesirable changes in frame geometry or undesirable changes in the distance between the seat and pedals.

Abstract: The fixture includes a mount assembly preferably including a cage. A lamp/bar assembly slides longitudinally into the mount assembly cage. The power cable of the lamp/bar assembly extends through a packing end cap. A transparent/translucent shatterproof plastic lamp tube protector sleeve is threadably secured to the packing end cap and encloses the lamp/bar assembly. When the packing end cap engages the cage and the protector sleeve is inside the cage, an inspection end cap is threadably secured on the opposite end of the protector sleeve. Thus, the protected lamp/bar assembly. The lamp may be replaced by removing the inspection end cap. Should there be an explosion within the fixture, heat will be dissipated as the expanding gases pass out of the fixture through the threading between the protector sleeve and end caps. The lamp/bar assembly is secured at a selected angle about the longitudinal axis of the mount assembly, between the two end caps.