Abstract: A pair of therapeutic devices intended for use by persons in rehabilitative, physical or occupational therapy following hand and wrist surgeries or injuries with both of these devices being customized to better fit the needs of the recovering individual, and both provide superior control, monitoring, and feedback than do conventional therapy exercises.

Abstract: A pair of therapeutic devices intended for use by persons in rehabilitative, physical or occupational therapy following hand and wrist surgeries or injuries with both of these devices being customized to better fit the needs of the recovering individual, and both provide superior control, monitoring, and feedback than do conventional therapy exercises.

Abstract: Apparatus and method for limiting the expansion and contraction of a production tubular within a pumpjack oil well includes an anchor having a hydraulic dampening chamber and an expansion joint. A piston is attached to the tubular and position within the hydraulic dampening chamber so that axial expansion and contraction of the tubular caused by thermal and loading forces is resisted by the constrained movement of the piston within the hydraulic chamber.

Abstract: A pair of therapeutic devices intended for use by persons in rehabilitative, physical or occupational therapy following hand and wrist surgeries or injuries with both of these devices being customized to better fit the needs of the recovering individual, and both provide superior control, monitoring, and feedback than do conventional therapy exercises.

Abstract: A safety valve assembly comprises a valve body, a flapper mount, flapper and a hinge used to rotate the flapper in an opened or closed position. Torsional pins are mounted adjacent the flapper mount, each having ends which extend into the hinge and terminating adjacent each other at a location along the hinge. Torsional springs are circumferentially mounted around the torsional pins. Tabs extend from the torsional springs and contact an actuation member extending over the top of the flapper. As such, the torque created by the torsional springs is transferred to the actuation member via the tabs, thereby reducing the stress on the torsional springs.

Abstract: A safety valve assembly comprises a valve body, a flapper mount, flapper and a hinge used to rotate the flapper in an opened or closed position. Torsional pins are mounted adjacent the flapper mount, each having ends which extend into the hinge and terminating adjacent each other at a location along the hinge. Torsional springs are circumferentially mounted around the torsional pins. Tabs extend from the torsional springs and contact an actuation member extending over the top of the flapper. As such, the torque created by the torsional springs is transferred to the actuation member via the tabs, thereby reducing the stress on the torsional springs.

Abstract: A lumbar support comprises a plurality of stackable platelets adapted to underlie a user's lumbar area, a pad attached to a top surface of an uppermost one of the platelets, and male/female mating connectors at the interface between platelets for interlocking the platelets together, and a protective pad on a bottom surface of a lowermost platelet. The platelets have variable height so that the user may selectively and incrementally adjust the height of the lumbar support to meet his or her particular lumbar support needs. The lumbar support preferably further includes a belt and/or guide members for adjustably and removably attaching the platelets to an exercise device, such as a weight lifting bench.

Abstract: An interconnection mask which is sandwiched between two members to be bonded together is comprised of a thin sheet of preselected material which has a plurality of apertures therein which are positioned, sized, and shaped to define the common bonding areas between the two members whereby structural failures induced by bonding and loading characteristics of the two members are minimized.

Abstract: A method of measuring dimensional variations in a workpiece in which two spaced points are formed on the workpiece and their images transferred to an image transfer material. After the workpiece has been subjected to a mechanical and/or thermal load and then allowed to return to its original unloaded state, the images of the points are again transferred to an image transfer material and the difference in spacing between the images of the points is compared to ascertain the dimensional changes.