James Mark Hardman
Electrician in Salt Lake City, UT
License number
Utah 130269-5504
Issued Date
Jan 1, 1910
Expiration Date
Jul 31, 1998
Category
Electrician
Type
Journeyman Electrician
Address
Address
Salt Lake City, UT
Professional information
Oil Free Compressor
US Patent:
4015915, Apr 5, 1977
Filed:
Nov 20, 1972
Appl. No.:
5/308015
Inventors:
James A. Hardman - Salt Lake City UT
International Classification:
F01L 1514, F04B 704
US Classification:
417490
Abstract:
An air compressor utilizing one or more pistons reciprocating within water cooled cylinders and operating in an oil free environment. Each piston is reciprocated by rotation of motor driven, balanced rotors, through a reciprocating and oscillating shuttle member. A centrally sleeved, hollow ball, accommodates shuttle member movement, while interconnecting the shuttle member and the rotors. Positive lubrication is provided for the rotor bearings, the hollow ball and shuttle member and the reciprocating piston shafts. The rotors are driven in opposite directions by motors mounted to maintain constant torque on the rotors.