Cylinder apparatus
AssigneesSMC Corporation, Matsushita Electric Industrial Co., Ltd.
InventorsKenji Iida, Shuji Ono, Ken Kobayashi
Life of this patent
Estimating the term…
Abstract
A cylinder apparatus includes a base plate, a piston fixed to the base plate and having a piston head and a piston rod connected thereto, a cylinder body having a cylinder chamber defined on one side of the piston head and a cylinder chamber defined on another side of the piston head around the piston rod, the cylinder body being supported for reciprocating movement with respect to the base plate in axial directions of the piston, an upper plate fixed to the cylinder body, and a bushing held in slidable contact with an outer circumferential wall surface of the cylinder body for guiding the reciprocating movement of the cylinder body.
Claims26
A cylinder apparatus comprising:
- a base plate;
- a piston fixed on top of said base plate and having a piston head and a piston rod connected thereto, wherein an end of said piston rod opposite said piston head is disposed on an upper surface of said base plate;
- a cylinder body having a cylinder chamber defined on one side of said piston head and a cylinder chamber defined on another side of the piston head around said piston rod, said cylinder body being supported for reciprocating movement with respect to said base plate in axial directions of said piston, said cylinder body having a diameter greater than an axial dimension thereof which is perpendicular to said diameter;
- a guide rod fixed to said base plate and inserted in said cylinder body for guiding the reciprocating movement of said cylinder body;
- an upper plate fixed on top of said cylinder body;
- a guide member comprising a casing surrounding said cylinder body and held in slidable contact with an outer circumferential wall surface of said cylinder body for guiding the reciprocating movement of the cylinder body;
- a pair of compressed-air inlet/outlet ports defined in a side wall of said casing for introducing a fluid under pressure alternately to said cylinder chambers;
- a first pair of communication passages defined in said base plate;
- and
- a second pair of communication passages defined in said piston and connected with said first pair of communication passages,
- wherein said compressed-air inlet/outlet ports communicate with said cylinder chambers through said first and second pairs of communication passages.
A cylinder apparatus comprising:
- a base plate;
- a piston fixed on top of said base plate and having a piston head and a piston rod connected thereto, wherein an end of said piston rod opposite said piston head is disposed on an upper surface of said base plate;
- a cylinder body having a cylinder chamber defined on one side of said piston head and a cylinder chamber defined on another side of the piston head around said piston rod, said cylinder body being supported for reciprocating movement with respect to said base plate in an axial direction of said piston;
- a guide rod fixed to said base plate and inserted in said cylinder body for guiding the reciprocating movement of said cylinder body;
- an upper plate fixed on top of said cylinder body;
- a guide member comprising a casing surrounding said cylinder body and held in slidable contact with an outer circumferential wall surface of said cylinder body for guiding the reciprocating movement of the cylinder body;
- a pair of compressed-air inlet/outlet ports defined in a side wall of said casing for introducing a fluid under pressure alternately into said cylinder chambers to reciprocally move said cylinder body and said upper plate with respect to said piston while said cylinder body is being guided by said guide member;
- a first pair of communication passages defined in said base plate;
- and
- a second pair of communication passages defined in said piston and connected with said first pair of communication passages,
- wherein said compressed-air inlet/outlet ports communicate with said cylinder chambers through said first and second pairs of communication passages.
Dependencies are inferred from the claim text.