Arrangement for a lock cylinder for a blocking cylinder

Details Arrangement for a lock cylinder for a blocking cylinder Arrangement for a lock cylinder for a blocking cylinder

1999-03-05

2001-11-20

Look, Edward K. (Department: 3746)

Expansible chamber devices

With releasable stop or latch means to prevent movement of...

Means includes element interfitting between working member...

C091S041000

Reexamination Certificate

active

06318237

ABSTRACT:

The present invention relates to an arrangement for a fluid-driven lock cylinder for the actuation of moving parts such as slides, cores and corresponding units on press tools and injection moulding tools for metal or plastic materials, comprising a piston accommodated in a displaceable fashion in a piston cylinder, in conjunction with which a divided ring forms an end stop for the piston.
Previously disclosed arrangements of the aforementioned kind cannot be manufactured and installed in a simple fashion so as to function in an effective and safe manner.
The principal object of the present invention is thus, in the first instance, to solve said problem by simple and efficiently functioning means.
Said object is achieved by means of an arrangement in accordance with the present invention, which is characterized essentially in that the stop ring exhibits a maximum diameter which exceeds the diameter of the piston, and in that an inclined outer axial part of the stop ring forms a stop for making contact with a counter-pressure part of the piston cylinder, in conjunction with which the counter-pressure part is inclined to a degree corresponding to the inclination of the end stop on the stop ring.


REFERENCES:
patent: 2764132 (1956-09-01), Bakke
patent: 4050674 (1977-09-01), Robbins et al.

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