Patent ID: 6431786
Filing Date: 2002-08-13
Classification: F16D,Y10T

Abstract:
Coupling means between a thermal motor shaft and a reciprocating pump shaft, in which the end of the motor shaft (11) has a frusto-conical surface (12), characterised by comprising:an intermediate sleeve (30), having an inner surface (32) of frusto-conical shape adapted to fit the frusto-conical surface (12) of the motor shaft (11), and a cylindrical outer surface (31), and having at least one rib (33), projecting radially from the cylindrical outer surface (31) and positioned to the side thereof; said sleeve (30) being arranged to be rigidly connected to the end of the motor shaft (11); the end of the pump shaft (21) possessing an axial cavity (22) having a cylindrical surface (23) adapted to engage as an exact fit the outer surface (31) of the sleeve (30), and having at least one protecting axial element (25), arranged to lie axially alongside said rib (33) of the intermediate sleeve (30), and to interfere therewith during rotation.