Abstract: A new compact linkage for translating rotary input force to amplified linear output force includes two force applying members which move apart relatively during operation of the linkage. A strut is pivotally attached at one end to each of the force applying members; the struts extend towards each other with a space between their free ends. Each strut has a bearing surface at its free end. A cam-roll member is interposed between the bearing surfaces of the struts and includes cam surfaces in contact with the bearing surfaces. When the cam-roll member is rotated by a lever attached thereto, it translates the rotary input force from the lever into linear output force by a rolling action of the cam-roll member against the bearing surfaces of the pivoted struts. The linkage is markedly more efficient in force translation and transmission than pivoting toggle linkages typical of the prior art.

Abstract: A flexible support and carrier assembly for supporting an associated accessory is shown having a plurality of sequentially arranged body-like segments, the segments being arranged with respect to each other for articulated motion as between adjacent segments, the plurality of sequentially arranged body-like segments define an elongated articulated structure having first and second ends, a spring operatively carried by the articulated structure resiliently resists while permitting articulated motion as between adjacent segments to occur in a first direction of articulation, the spring also resiliently urges the adjacent segments to experience articulated motion in a second direction of articulation opposite to the first direction, and guard portions carried at least by certain of the segments, the guard portions functioning to prevent the unintentional incursion of unrelated objects into spaces between the adjacent segments when experiencing articulation.

Abstract: A diminishing arm toggle linkage has the work site within the toggle geometry and thereby provides exponential force enhancement. In preferred embodiments the mode of operation shifts on demand from a light-load-pivoting mode to a heavy-load-rolling element mode thereby easing operation and reducing friction and wear so as to provide prolonged durability and continuing dimensional accuracy. When the toggle linkage is embodied in a crimping tool an optional anti-reversing ratchet assembly prevents the tool from opening during use until a crimp is completed.