Abstract: Lapping or polishing at high speeds with fine abrasive particles offer significant advantages in the speed of lapping, savings of time in lapping, and smoothness in the finished articles.

Abstract: Lapping or polishing at high speeds with fine abrasive particles offer significant advantages in the speed of lapping, savings of time in lapping, and smoothness in the finished articles. An improved lapping system comprises a lapper platen system comprising:a) a frame having a total weight of at least 200 kg supporting a work piece holderb) a rotatable platen having an abrasive surface comprising an abrasive sheet secured to said platen;c) a work piece holder which is movable on said frame;d) a means for introducing a first amount of liquid onto said abrasive surface of said platen at a location before contact between a work piece held on said work piece holder and said abrasive surface on said platen;e) a means for introducing a second amount of liquid onto said abrasive surface of said platen after contact between said work piece and said abrasive surface; andf) means for directing air against said abrasive surface after introduction of said second amount of liquid.

Abstract: An improved process for lapping a surface according to the present invention comprises:a) providing a work piece with two surfaces to be lapped,b) providing two rotatable platens, each having i) a back surface and ii) a front surface,c) providing a sheet of abrasive material having an abrasive face and a back side, the back side being on the front surface of each of the two rotatable platens with the abrasive faces of each sheet facing the other sheet,d) placing the work piece with two surfaces to be lapped between the two rotatable platens, so that each abrasive face faces only one of the two surfaces to be lapped,e) rotating the two platens at a rotational speed of at least 500 revolutions per minute,f) contacting each of the abrasive faces with the only one of the two surfaces to be lapped, andg) lapping said two surfaces of said work piece simultaneously.

Abstract: Lapping or polishing at high speeds with fine abrasive particles offers significant advantages in the speed of lapping, savings of time in lapping, and smoothness in the finished articles. An improved lapping system comprises a lapper platen system comprising a rotatable platen having I) a back surface and ii) a front surface, wherein the front surface of the rotating platen facing a work piece has a flat plateau or raised area which is continuous around a perimeter of the front side of said platen and the plateau is elevated with respect to a central area on the front surface. The front surface optionally has vents for air, the platen optionally has a back side to which a shaft is connected (directly or through intermediate connections) to rotate the platen and there is a front side on the platen to which is secured an abrasive sheet by reduced air pressure conveyed through said vents.

Abstract: An apparatus and method for isometric muscle strength testing using a chair apparatus (40) having a support frame structure (42), a seat assembly (46), a foot rest assembly (60) and load cells (100) interconnected to the support frame structure (42) for measuring the isometric force exerted by any of a plurality of muscle groups in a human subject's body. The load cells (100) are possibly positioned on six track systems; a posterior track (80a), left and right lateral tracks (80b,c) an anterior track (80d), a forward upper track (80e) and a forward lower track (80f) to enable alignment with the muscle group selected for testing.

Abstract: An oscillating tool, particularly a cast cutter (40) having a support housing (46) with a cutting blade (70) interconnected to the housing (46) proximate one end thereof for oscillatory rotational movement about an axis (56) is disclosed. A torsion shaft (54) is fixedly interconnected at a first end (102) to the housing (46) so as to prevent rotational oscillation at the first end of the torsion shaft (54). The torsion shaft (54) further has a free second end (100) enabling oscillatory rotational movement of the second end (100) generally about the axis (56) of the cast cutter blade (70). A hollow tubular rotor support member (58) substantially more rigid than the torsion shaft (54) is attached to the torsion shaft (54) proximate the second free end (100) of the torsion shaft (54).

Abstract: A pump has a reciprocably driven rod disposed in a quantity of fluid to be pumped, there being an outlet from the fluid chamber. A pair of elements respectively disposed at the outlet opening and on the end of the rod are separable and jointly define a pumping cavity which is filled when the elements are separated. When the elements are brought together, pumping is achieved in that one of the elements is yieldably compressible so as to reduce the size of the pumping cavity to force out a drop of fluid. A stirrer is disposed near the above-mentioned elements, and reciprocatory motion of the rod is transferred to a one-way clutch to provide incremental rotation of the stirrer.

Abstract: A method and apparatus for use with a sewing machine by which a liquid is injected between lapped layers of material being sewn. A supply of the liquid at atmospheric pressure is fed by gravity to a constant displacement pump, the pump being actuated by a driven part of the sewing machine so that pumping rate is proportional to sewing rate. The outlet of the pump passes through a line which divides under the control of valve means. One branch of the line leads to a tube that is disposed in a folder, the tube having a discharge end projecting from the folder and disposed just upstream of the sewing machine needle(s). A further flattening roller is disposed after the presser foot through which the needles reciprocate. The other branch of the line is a return line that leads back to the reservoir.

Abstract: A fishing lure component is made by arranging heat-fusible hair-like fiber substantially in a plane, then a heated bar forms a hot flexible bond of the material of the hair-like fiber by which the fibers are bound together, after which the hot flexible bond is wrapped around an elongated member, and is immediately placed with the member in a mold whereby the bond is internally and externally shaped and cooled, the wrapped bond being fully fused together at the ends that extend around opposite sides of the elongated member. The elongated member can form a part of the lure component, or it can be so formed that it can be removed to provide a fishing lure component having hair joined together at one end by a molded tubular common bond of the hair material.