Patent ID: 9138885
Filing Date: 2015-09-22
Classification: B25B,B25F,Y10T

Abstract:
1. A bypass assembly for a tool comprising: a body having a supply channel capable of being connected to a source of fluid for allowing the fluid to flow therethrough, a bypass spool channel in fluid communication with said supply channel and through which the fluid is capable of flowing, and a return channel in fluid communication with said bypass spool channel via a port and in fluid communication with the source and through which the fluid is capable of flowing; a bypass spool seated in said bypass spool channel, said bypass spool having a bore with an open end which is in fluid communication with said supply channel, said bypass spool having first and second passageways in fluid communication with said bore, said first passageway having a smaller diameter than said second passageway; and said bypass spool being rotatable to three discrete positions within the bypass spool channel, wherein in said first position, neither passageway aligns with said port and fluid does not flow through the bore to either passageway, in said second position, said first passageway aligns with said port, and fluid flows through said bore, to said first passageway, through said port, and into said return channel, and in said third position, said second passageway aligns with said port, and hydraulic fluid flows through said bore to said second passageway, through said port, and into said return channel.