Abstract:
A system for air pressure electric switch adjustment comprises a frame. A pressure port is mounted to the frame for connection to a source of fluid under pressure to be monitored. An actuator is movably mounted relative to the frame responsive to fluid pressure at the pressure port. A switch includes a fixed contact and a movable contact. The fixed contact is fixedly mounted relative to the frame. A differential mechanism comprising a pair of linked levers is hingedly mounted to the frame. One of the linked levers is driven by the actuator. The other lever carries the movable contact. A snap spring links the two levers so that the other lever is normally in a first position with the switch in a normal state. The other lever is toggled responsive to pivotal movement of the one lever by the snap spring to a second position with the switch in an actuated state. A switch adjustment mechanism is operatively mounted to the frame for varying the first position of the other lever relative to the one lever to vary actuation pressure.
Abstract:
A pulley assembly for use in an archery bow includes an axle journal which defines a pivot axis about which a pulley body can rotate. The pulley body includes a first, a second and a third groove defined therein. Each groove defines a curve which extends at least partway around the pivot axis. The first groove is a bow string groove operative to receive a portion of a bow string. The second groove is operative to receive a portion of a first bow cable section and the third groove is operative to receive a portion of a second bow cable section. The pulley assembly is incorporated into a compound bow, and when the bow string is unwound from the first groove, a portion of the first bow cable section is wound into the second groove and a portion of a second bow cable section is wound into the third groove. Also disclosed are compound bow configurations incorporating the pulley assembly.
Abstract:
An exercise device includes a frame having a pair of crank arms pivotally supported thereupon. Each crank arms engages a drive link, and each drive link engages a guide member. A foot link is pivotally connected to each guide member, and a control link pivotally connects each foot link to a drive link. In operation, the drive links and crank arms cooperate to cause the reciprocal motion of the guide members, and the control link operates to vary the angle between each foot link and its associate guide member as that guide member reciprocates. The apparatus provides a very natural running and stepping action for a user who is positioned on the foot links.
Abstract:
A single cam compound bow includes a lower pulley assembly, an upper pulley assembly and three cables. The lower pulley assembly has an end of all three cables attached thereto and includes a power cam portion. The upper pulley assembly has the other end of the first and third cables attached thereto, and the other end of the second cable is attached to the upper bow limb. The upper pulley assembly is configured so that the first cable is unwound therefrom at a rate which differs, and is initially lower than, the rate at which the third cable is wound onto the upper pulley assembly. The configuration of pulleys causes the nock point of the bow string to travel in a straight line.
Abstract:
An exercise device includes a pair of foot engaging links. The first end of each link is supported for rotational motion about a pivot axis and a second end of each foot link is guided in a reciprocal path of travel. The combination of these foot link motions permits the users foot to travel in an inclined, oval path of travel. This natural foot action exercises a large number of muscles through a wide range of motion.