Patent ID: 9683642
Date: 2017-06-20
CPC Classifications: F01B,F04B,F16H

Claim:
1. A mechanism for converting rotating motion to rotating and reciprocating motion and/or for converting rotating and reciprocating motion to rotating motion, the mechanism comprising: a housing or support; a first member rotatable relative to the housing or support about a first axis and reciprocable along the first axis relative to the housing or support; and a second member rotatable relative to the housing or support about a second axis that is spaced from the first axis, the second member operatively coupled to the first member such that rotation of one of the members causes rotation of the other of the members; wherein the first member comprises a groove or channel and surfaces defining said groove or channel provide two generally opposed cam surfaces; and the second member comprises a projection and sides of said projection provide two generally opposed guide surfaces configured to be in rolling contact with the cam surfaces, said guide surfaces being coaxial with the second member; wherein the groove or channel comprises gear teeth between the cam surfaces, forming a first gear, and the projection on the second member comprises gear teeth forming a second gear configured to engage the first gear; and wherein the cam surfaces and the guide surfaces are configured to cause the first member to rotate upon movement of the first member along the first axis, and/or to cause the first member to move along the first axis upon rotation of the first member.