Abstract: A golf swing training device that fits on the inner down swing arm and optionally it has a thumb restraint extension. The device comprises a shell contoured to fit the inner arm from the wrist to the lower portion of the upper arm which is strapped to the arm. The device cocks the arm slightly but fully extends the arm for the back swing and down swing and aids the golfer in forming the right habit by muscle memory to extend the arm during the golf swing. The device is flexible laterally so that a snug fit between the device and the arm can be obtained. The device can twist to accommodate the twisting of the arm during the golf swing. The device resists bending of the forearm about the elbow to keep the forearm extended. The thumb extension inhibits flexure and side to side movement of the thumb during the golf swing. The thumb extension can be detachably attached to the shell.

Abstract: A golf swing training device that fits on the inner down swing arm and optionally it has a thumb restraint extension. The device comprises a shell contoured to fit the inner arm from the wrist to the lower portion of the upper arm which is strapped to the arm. The device cocks the arm slightly but fully extends the arm for the back swing and down swing and aids the golfer in forming the right habit by muscle memory to extend the arm during the golf swing. The device is flexible laterally so that a snug fit between the device and the arm can be obtained. The device can twist to accommodate the twisting of the arm during the golf swing. The device resists bending of the forearm about the elbow to keep the forearm extended. The thumb extension inhibits flexure and side to side movement of the thumb during the golf swing. The thumb extension can be detachably attached to the shell.

Abstract: A window operator, located at one side of the window, opens or closes the sash without jamming. The operator includes three structural extrusions:the track, of rectangular cross-section;the traveler, of H-cross-section; andthe crank housing, of seven-sided cross-section.The track is roughly equivalent to the window opening height in length, and has a longitudinal gap with smoothed edges. The crank housing, open at the base, has two sides angled to the vertical so as to present parallel faces for mounting the crankshaft, and has three screw bosses. The track has locating holes providing a location at the top for an idler pulley, has an interior side routed out at the base to accept the sprocket, and has an exterior location at the base for a sprocket shaft bearing. A sprocket shaft and sprocket are mounted within the track. A toothed belt about the sprocket and the idler pulley is driven by a sprocket shaft and is attached to a polyvinyl chloride H-cross-section traveler captured by the gap in the track.