Patent ID: 11873847
Assignee: FUJIKURA COMPOSITES INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. A cylinder device comprising:
a cylinder body having a front side and a rear side; and
a shaft member supported in the cylinder body for rotation about the shaft center line that extends between the front side and the rear side of the cylinder body,
wherein the cylinder body is provided with a rotation mechanism including a rotation chamber through which the shaft member extends along the shaft center line and a rotating body mounted on the shaft member in the chamber, the rotating body connected to an end portion of the shaft member to rotate the shaft member about the shaft center line in accordance with an action of compressed air,
wherein the rotation mechanism has a front end positioned at the front side of the cylinder body, a rear end positioned at the rear side of the cylinder body, and an outer circumferential part by which the front end and the rear end are connected,
wherein the rotation chamber is defined by an internal region surrounded by the front end, the rear end and the outer circumferential part,
wherein the rotation mechanism comprises:
a supply rotation port, for supplying the compressed air to the rotating body, provided in one of the front end and the rear end of the rotation mechanism and communicably connected with the rotation chamber, and
a discharge rotation port, for discharging the compressed air, provided in the other of the front end and the rear end of the rotation mechanism and communicably connected with the rotation chamber;

wherein the rotating body is provided with a plurality of vanes and through-spaces between the vanes, the through-spaces extending through the rotating body in a direction of the shaft centerline;
whereby compressed air supplied to the rotation chamber through the supply rotation port hits the vanes, passes through the through-spaces between the vanes thereby rotating the rotating body, and is discharged through the discharge rotation port, and
wherein the shaft member is supported to be capable of stroke movement, and the rotating body strokes with the shaft member.