|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||227/130 ; 173/139 ; 91/243|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 31 인용 특허 : 3|
The present invention relates to a sound-dampened driving apparatus for fasteners wherein a main valve member is arranged above a working cylinder of the apparatus and movable within a cylindrical bore. When the main valve member is in its lower at rest position, the main valve member separates the working cylinder from a source of compressed air and connects the cylinder to the atmosphere. When the main valve member is in its upper actuating position, the working cylinder is connected to the source of compressed air and the valve member blocks the cylin...
A sound and recall-dampened driving apparatus for fasteners, which apparatus includes a housing defining a main working piston cylinder and a cylindrical housing bore thereabove and a main valve means positioned in said cylindrical housing bore above the working piston cylinder and defining a chamber between the valve means and the end of the housing bore, which valve means includes a valve member movable from a lower position, wherein the valve member separates the working piston cylinder from a source of compressed air and connects the cylinder with th...