Abstract: A prosthetic insert unit for cushioning shocks in prosthetics is provided. The unit includes attachment member (150 etc.), a lower sleeve (124′ etc), a slide bearing (152′ etc.) to allow free reciprocal motion therebetween, an elastomeric energy storage member (124′ etc.) received in the interior of the sleeve (124′ etc.), a piston (134′ etc.) cooperative with said elastomer member to compress same, and an anti-rotation mechanism. Preferably, the anti-rotation mechanism is integral with the slide bearing (152′ etc.). The elastomer member provides controlled deflection as well as damping for the insert. Preferably, an anti-click element (269 etc.) is provide to minimize rebound clicking. Acoustical elements (268 etc.) may also be included to minimize noise transmission into other areas of the insert.

Abstract: A resistance device (20) useful as a thumb or hand exerciser. The device (20) includes an outer member (32) including an axial through bore (34); an inner member (22) received within the through bore (34) and extending out of both its ends; and a friction member (36), such as an elastomer sleeve, immovably mounted on said inner member (22); said friction member (36) being in operable contact with the through bore (34) to provide resistance to relative axial movement between said inner (22) and outer (32) members. The level of resistance may be adjusted by rotating ends (24, 24′)of the inner member (22) relative to one another such that the friction member (36) is axially compressed. Stops (30, 30′) limit axial travel.

Abstract: An elastomer detent assembly includes a first member and a second member. The first member includes a plurality of recesses formed in a surface thereof. The second member is engagable with the plurality of recesses and includes at least one detent finger. A dimension of the at least one detent finger is sized relative to a comparable dimension of the surface such that, upon application of a force, the at least one detent finger will move in finite increments relative to the first member providing a detent mechanism. At least one of the first and second members further includes an elastomer portion and a radially extending flange for limiting axial motion between the members. Embodiments including elastomer bonded to either an inner or an outer member are provided.

Abstract: Three embodiments of a shock-isolating caster. A surface-effect damper engages at least one of a wheel element and an intermediate structural member to dampen vibration and shock loads which would otherwise be transmitted from the wheel element through the intermediate structure and mounting member to the equipment supporting cart. A first embodiment positions the damper between an outer wheel rim and an inner wheel hub. Second and third embodiments mount the wheel on a pivotable arm and dampen the movement of the arm. Capability to adjust damping levels is provided.