3 results about "Tapered teeth" patented technology

This invention relates to the field of performance testing equipment technology, specifically to a multi-directional testing device and method for the tensile properties of pure rubber film. The device includes a film bottom clamping mechanism, comprising a base plate, on which a third pressure plate and a second fixing plate are fixedly mounted. A fourth pressure plate is provided on the second fixing plate to clamp the pure rubber film onto the third pressure plate. A third bearing plate is fixedly mounted on the base plate, and a second splined bushing is rotatably connected within the third bearing plate. A second bevel tooth is fixedly mounted at one end of the second splined bushing, and a first bearing plate is rotatably connected to the outer wall of the second splined bushing. A first top plate and a second bearing plate are fixedly mounted on the first bearing plate, and a first threaded rod is rotatably connected to the first top plate and the second bearing plate. This device allows for testing the maximum tensile strength of the pure rubber film in multiple directions. The device is easy to operate, has a long service life, and is easy to maintain.

A bladeset is operationally connected to a hair clipper and includes a stationary blade and a moving blade configured for reciprocating laterally relative to the stationary blade. At least one of the stationary blade and the moving blade includes a base and a plurality of teeth extending from the base. The plurality of teeth includes a set of long teeth, each of the long teeth having a tip parallel to and spaced a first distance from the base defining a first cutting line; and a set of short teeth, each of the short teeth having a tip parallel to and spaced a second distance from the base defining a second cutting line spaced apart from the first cutting line. The first cutting line is farther from the base than the second cutting line.

An externally toothed gear (3) of a strain wave gearing (1) is provided with external teeth (34), the tooth profile of which gradually changes along the tooth trace direction. The external teeth (34) are each provided with an external tooth portion (341) that is capable of meshing with internal teeth (24) of an internally toothed gear (2), and an external tooth extension portion (342) that does not mesh with the internal teeth (24). The external tooth extension portions (342) have a tapered tooth profile that tapers off, and serves as a guide for instances when the external teeth (34) are inserted between the internal teeth (24). The tooth profile (342c) of the external tooth extension portions (342) is slightly smaller than the tooth profile (341c) at first ends (341a) of the external tooth portions (341), to which the external tooth extension portions (342) are linked. The tooth profile (342c) does not protrude in the tooth depth direction or the tooth thickness direction from the tooth profile (341c) due to misalignment of a molding die. It is easy to carry out fitting work for inserting the externally toothed gear (3) into the internally toothed gear (2) using the external tooth extension portions (342) as a guide.