GOOD YEAR HARDWARE CO., LTD. Patent applications |
Patent application number | Title | Published |
20150202751 | TOOL BIT ADAPTER - A tool bit adapter includes a base member including a cylindrical body having a receiving open chamber formed of a front small diameter portion, a rear large diameter portion and one or multiple through holes in communication between the small diameter portion and the atmosphere, a ball mounted in each through hole, an operating member slidably sleeved onto the cylindrical body and having an inside groove and a pressure face, a pusher accommodated in the cylindrical body and having one or multiple recessed retaining portions. When the pusher is in the rear end position, the pressure face of the operating member forces the balls toward the inside of the receiving open chamber into engagement with the respective recessed retaining portions. Thus, the tool bit adapter can positively detachably secure the loaded tool bit without any additional positioning structure. | 07-23-2015 |
20150202689 | TOOL BIT ADAPTER HAVING A POSITION-LIMIT ROD - A tool bit adapter having a position-limit rod includes a base member including a cylindrical body defining a longitudinal receiving open chamber and radial through holes and a ball movably mounted in each radial through hole, an operating member, a first elastic member stopped between a retaining ring at the cylindrical body and the operating member, a pusher having a position-limit groove located in the periphery thereof, a position-limit rod mounted in the cylindrical body and projecting into the receiving open chamber and inserted into the position-limit groove and selectively stoppable at one of two opposite ends of the position-limit groove, a second elastic member stopped between the pusher and the cylindrical body, and one or multiple locating grooves formed in the pusher or a tool bit to be installed for receiving the balls. | 07-23-2015 |