|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||417/393 ; 417/454|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 13 인용 특허 : 1|
A double acting positive displacement pump has first and second opposed cylinders, an elongate piston rod connected to cylinder pistons, a plurality of tie rods fastening the cylinders together, spacers on the tie rods and between the cylinders, a control cradle mounted on the tie rods and fixed in position by slots in the spacers, a propellant gas control valve on the cradle, and a valve actuator on the cradle and operatively connected to the piston rod.
A pneumatically powerable double acting positive displacement fluid pump comprising (a.) first and second cylinders opposed to one another on a common axis, each cylinder having an outboard head on an outer end, an inboard head on an inner end, a fluid port in each end, and a piston dividing the cylinder into inner and outer fluid chambers; (b.) an elongate piston rod projecting through both of the inboard heads and connected to both of the pistons, one piston being on each end of the piston rod; (c.) a plurality of elongate tie rods generally parallel t...