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US 5,396,831 AGranted
Hydraulic plunger replacement method and device
AssigneeIngersoll-Rand Company
InventorsLyle E. Marvin, Dan Benson
Life of this patent
Estimating the term…
Abstract
A removable cartridge seal and dilatable collet retainer for a hydraulic plunger is provided to permit ready removal and replacement of the plunger and seal in a hydraulic intensifier device or the like.
Claims5
An apparatus for releasably securing a piston rod to a piston comprising:
- a piston having a socket formed therein for receiving an axially disposed piston rod;
- said piston rod being provided with an expanded head having a diameter greater than said piston rod for cooperative insertion in said socket;
- said socket being further provided with radially expanding retention means deployable behind said expanded head;
- and
- said radially expanding retention means being selectively releasable by a release means axially deployed along said piston rod from the end opposite said expanded head.
2 more elements
An apparatus for releasably securing a piston rod to a piston comprising:
- a piston having a cylindrical socket formed therein for receiving an axially disposed piston rod;
- said piston rod being provided with an expanded head having a diameter greater than said piston rod for cooperative insertion in said socket;
- said socket being further provided with retention means deployable behind said expanded head for retaining said piston rod in said socket;
- and
- said retention means being selectively releasable by a release means axially deployed along said piston rod from the end opposite said expanded head.
2 more elements
Dependencies are inferred from the claim text.