Abstract: A riding exercise machine has a frame with a pull housing operable by a user on a seat. The pull housing is secured to a frame by a pin. Upon removal the riding machine can be folded. A push housing may also be incorporated into the machine.

Abstract: A stepping exercise machine has hydraulic cylinders to resist downward movement of its pedals or treadles and a bias spring to urge the pedals or treadles to their upper position of travel. A plurality of receptacles such as holes or slots interconnect with a hook associated with one end of the hydraulic cylinders to in turn vary the resistance to movement of the pedals or treadles.

Abstract: A cross country skiing exercise machine has an upright member and an extension member which are structured to move between a first upright configuration and a second configuration in which they are collapsed. The main member is positioned substantially between the parallel tracks of the cross country ski exercise machine. The feet underneath the exercise machine constitute posts about which a reciprocating strap is trained. A rotatably pair of posts are positioned about the strap to tension the strap to cause increased friction and in turn increased resistance to movement of a first trolley and a second trolley which are positioned on the tracks for operation by the user in the performance of cross country type exercises.

Abstract: An improved rotary-type selector switch for fan speed control or the like including curved terminal members supported upon a base member around a central boss extending therefrom and having a conductive contactor for selectively interconnecting said terminal members when said contactor is pivoted. A cover member is attached to the contactor for pivotal movement together and retains springs which push the contactor against the terminal members and permit movement of the cover toward the contactor. The aforedescribed parts are assembled by a pin fastener with an expandable first end portion which engages the base in snapfitting relation and an enlarged second end portion overlying the cover member. Circumferentially spaced detent means and a projecting ridge formed between the pin fastener and the cover operably engage one another positively to locate the cover and connected contactor in a plurality of annular positions with respect to the base member.