|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||227/8 ; 227/130 ; 227/156 ; 227/120|
|발명자 / 주소|
|인용정보||피인용 횟수 : 39 인용 특허 : 3|
A fastener driving device of pneumatic type comprises a piston (20) within a cylinder (49), and a driver (21), connected to the piston (20) and movable through a fastener driving throat (26) formed by the housing of the device. A chamber (52) is provided within the housing to function as an air pressure reservoir. First and second valves (15) provide an appreciably lower pressurized air to the underside of the piston (20). The valves (15) are so arranged that when they are in a first position they allow a flow of pressurized air from the reservoir (18) t...
A pneumatically powered fastener driving device comprising in combination a housing, a cylinder within said housing, a piston within said cylinder, a driver connected to said piston, a driving stroke means providing pressurized air to the upper side of said piston, a portion of said housing forming a driving throat through which said driver can move, means for inserting a fastener into said driving throat, a chamber within said housing to function as an air pressure reservoir, characterized in that it further comprises return stroke means providing an ap...