US 7,748,310 B2 · Liner retention system

Abstract

Apparatus and method for securing a cylinder liner to a pumping module. A first part of an assembly housing pistons is fastened to a pumping module and a second part of the assembly is brought against the first so that the pistons act on tensioning plates which each have a stud rod extending therefrom through the assembly at an end distal to the pumping module. Each rod has a first portion substantially surrounded in an elastomeric member and a second portion threaded to receive a nut. The rods are passed through a clamping ring on the cylinder liner and the nut is attached to the rod. Actuating the pistons causes initial compression of the elastomeric member by the tension plate and allows tightening of the nut toward the pumping module. Release of the pistons then causes expansion of the elastomeric member to forcibly compel the cylinder liner towards the pumping module.

Claims17

Dependent claims

Apparatus for securing a cylinder liner to a pumping module, the apparatus comprising one or more arrangements each fastened to said pumping module, each arrangement comprising an assembly including a piston, the piston acting on a tension plate, the tension plate having a stud rod extending therefrom out from the assembly at an end distal to the pumping module and thereon passing through a respective aperture in a clamping member adapted to grip the cylinder liner, the rod having a first portion substantially surrounded by a biasing member and a second portion threaded to receive a nut, wherein initial compression of the biasing member by the tension plate and tightening of the nut toward the pumping module, followed by release of the biasing member forcibly compel the cylinder liner towards the pumping module.

Dependencies are inferred from the claim text.

Liner retention system

Life of this patent

Liner retention system

Life of this patent

Abstract

Claims17