US 2002/0164252 A1 · Tapered polygon coupling

Abstract

A tapered polygon coupling for an impeller and shaft. The shaft has a tapered bore having a polygonal cross-section. The impeller includes a corresponding tapered polygon plug configured to be placed in the bore of the shaft. A fastener is provided for securing the impeller to the shaft. The fastener passes through a passage in the plug of the impeller. The plug of the impeller is split so that when the fastener is inserted into the passage the plug expands to contact the bore and create an interference fit between the shaft and the impeller. Additionally, the impeller may include the tapered bore having a polygonal cross-section, and the shaft may include the tapered polygon plug configured to be placed in the bore of the impeller.

Claims17

Dependent claims

An impeller and shaft assembly comprising:

a first coupling member including a tapered bore having a polygonal shaped cross-section;
a second coupling member including a tapered plug having a polygonal shaped cross-section, the plug configured to be received into the bore of the first coupling member;
an impeller and a shaft;
one of the impeller and the shaft including the first coupling member, and the other of the impeller and the shaft including the second coupling member;
a fastener for securing the second coupling member to the first coupling member, the fastener adapted to be inserted through an opening in the impeller and into a passage in the plug of the second coupling member;
and
wherein the plug of the second coupling member is split so that when the fastener is inserted into the passage the plug expands against the bore thereby creating an interference fit between the first and second coupling members.

4 more elements

Dependencies are inferred from the claim text.

Tapered polygon coupling

Life of this patent

Tapered polygon coupling

Life of this patent

Abstract

Claims17