Automotive Products, Inc.

Charles A Kassin

Richard A Nix

Keith V Leigh-Monstevens

David C Barker

Marina Kassin

Snap-connected multi-part cylinder for pull-type master cylinder

Improvement in a hydraulic control apparatus for assembly on structure to actuate a remotely located mechanism, the apparatus including an actuator having an annular body providing an annular piston chamber therein and an annular piston slidably reciprocable on the body, the actuator being pre-filled with hydraulic fluid and pre-tested prior to being installed on the structure, an annular elastomeric seal axially reciprocable within the piston chamber which liquid-tight seals the hydraulic fluid behind it, the improvement comprising constructing the actuator so that it can be separated into two subassemblies, one being a body subassembly which includes the body and the other being a piston subassembly which includes the piston, the construction of the body being such that its piston chamber is formed at the rear end thereof and the construction of the piston being such that the rear end thereof reaches into the piston chamber and abuts against the seal during functioning of the actuator, the improvement further comprising providing a movement-restraining device for insertion on the body to take the place of the piston when the two subassemblies are separated from each other, the movement-restraining device being constructed so that it is slidable on the body and so that the rear end thereof reaches into the piston chamber and abuts against the seal, the movement-restraining device being forcefully held on the body to hold the seal against axial movement while the actuator is filled with hydraulic fluid.

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Utica, MI, United States of America

Charles A Kassin