Charles J Zimmerman

US Patent:

50750534, Dec 24, 1991

Filed:

Mar 5, 1990

Appl. No.:

7/489798

Inventors:

Thomas J. Bernadic - Madison Hts. MI
Charles E. Zimmerman - Southfield MI

Assignee:

GTE Valenite Corporation - Troy MI

International Classification:

B29C 4302

US Classification:

264 56

Abstract:

A method for making a compact for a densified cutting insert, an easily machinable material is cut to the desired form, a plastic molding material having specific properties is contacted with the shaped machinable material, hardened to form a mold, and the resulting mold is used to form a compact for a cutting insert having the desired configuration which compact may be subsequently densified.

US Patent:

43231160, Apr 6, 1982

Filed:

Dec 17, 1979

Appl. No.:

6/104512

Inventors:

Charles J. Zimmerman - Monroe MI

Assignee:

Carrier Corporation - Syracuse NY

International Classification:

F28F 2702

US Classification:

165 97

Abstract:

A flow control apparatus for use with a heat exchanger having a plurality of heat exchange tubes. The flow control apparatus comprises a housing; and the housing is divided into a first compartment for communication with a first set of heat exchanger tubes, a second compartment for communication with a second set of heat exchange tubes, an inlet compartment for connection to an external fluid source, and an outlet compartment for discharging fluid from the housing. First, second, third, and fourth ports are provided for transmitting fluid between, respectively, the first and outlet compartments, the first and inlet compartments, the second and inlet compartments, and the second and outlet compartments. The flow control apparatus further comprises a flow control gate having a normal flow position directing fluid through the second and fourth ports, and a reverse flow position directing fluid through the first and third ports.