Other

Hicklin Engineering, L.c.

L & H Threaded Rods Corp.

Duane E Shultz

John C Gray

This invention pertains to transmission testers, and specifically to automatic transmission testers, and methods for their use. The headstock is mounted for pivotation about a vertical axis. A novel eddy current brake provides active control of loading of the transmission while the transmission is being tested. The prime mover is preferably an electric motor, with motor controls, adapted to temporarily suspend acceleration of the speed when the transmission shifts gears.

Apparatus and methods for testing transmissions

A frame supports an interchangeable mandrel or die which receives the center portion of an elongated metal rod having opposite threaded end portions, and the rod is clamped to the die by a locking bar actuated by a hydraulic cylinder. The frame also includes a set of vertically spaced cross members connected by a pair of parallel spaced guide rods which support a carrier bar for vertical movement. The carrier bar pivotally supports corresponding end portions of a pair of arms each formed by parallel spaced plates, and each pair of plates defines slightly angled aligned cam slots. A pair of bending rollers are supported by the opposite end portions of the arms, and a hub member extends between the plates of each arm and supports rollers which engage the corresponding cam slots to provide for moving the arms and bending rollers along non-parallel converging paths for overbending the rod around the die. An elongated adjustment screw is rotatable supported by the lower cross member and extends between the plates forming the arms. The screw has oppositely threaded portions engaging the hub members to provide for convenient and precisely adjusting the spacing between the bending rollers for accommodating dies and rods of different sizes.

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Pulaski, WI, United States of America

Duane E Shultz