Rodless cylinder

Details Rodless cylinder Rodless cylinder

1994-12-27

1996-07-02

Nguyen, Hoang

Expansible chamber devices

Sealed opening in longitudinal wall of chamber for receiving...

277DIG7, F01B 2900

Patent

active

055311512

ABSTRACT:
A rodless cylinder which is capable of minimizing the leak of pressure fluid from a cylinder tube. A slit of an almost trapezoidal section is formed in the cylinder tube in a longitudinal direction thereof, a trapezoidal belt which is fixed to the ends of the cylinder tube at the both ends thereof is fitted into the slit, the trapezoidal belt slidably passes through a piston which is fitted into the cylinder tube, and a piston cup is fitted on the outer periphery of the piston. In addition, ribs are provided between an outer lip of the piston cup which is in abutment against the vicinity of the both sides of the bottom of the trapezoidal belt and an inner lip of the piston cup, and the both side walls of tile slit of the almost trapezoidal section are formed into convexly curved configurations in such a manner that the both side walls of the slit can be connected to the inner peripheral surface of the cylinder tube forming a smooth curve. And, on the both upper side walls of the slit, there are provided projection strips for nipping and holding the trapezoidal belt therebetween.

REFERENCES:
patent: 4685383 (1987-08-01), Ruchser
patent: 4733604 (1988-03-01), Lipinski
patent: 4991494 (1991-02-01), Migliori
Japanese Gazette No. 1-320305, "Device To Stop Cylinder", Dec. 26, 1989.
Japanese Gazette No. 1-108404, "Rodless Cylinder", Apr. 25, 1989.
Japanese Gazette No. 64-25507, "Rodless Cylinder", Feb. 13, 1989.
Japanese Gazette No. 63-96305, "Rodless Cylinder", Apr. 27, 1988.
Japanese Gazette No. 63-57801, "Rodless Cylinder", Apr. 18, 1988.
Japanese Gazette No. 62-184208, "Rodless Cylinder", Aug. 12, 1987.
Japanese Gazette No. 62-56606, "Device To Stop Cylinder", Mar. 12, 1987.
Japanese Gazette No. 61-233209, "Device To Stop Cylinder", Oct. 17, 1986.
Japanese Gazette No. 61-141894, "Hose Joint", Sep. 2, 1986.
Japanese Gazette No. 61-141802, "Rotary Actuator", Sep 2, 1986.
Japanese Gazette No. 61-79072, "Rodless Cylinder", Apr. 22, 1986.
Japanese Gazette No. 59-83810, "Device To Stop Cylinder", May 15, 1984.
Japanese Gazette No. 57-185909, "Detecting Device Of Cylinder Rod Position", Nov. 25, 1982.

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