Glen Brand

US Patent:

6581622, Jun 24, 2003

Filed:

Sep 27, 2001

Appl. No.:

09/965439

Inventors:

Glen Brand - Omaha NE 68134
Timmy L. Chew - Council Bluffs IA 51503

International Classification:

G05D 1103

US Classification:

137 98

Abstract:

A divider combiner valve using only one spool without any springs. The correct holes open and close by check valves. These are simple and reliable. There is no chance of the holes not being in the correct location. Since there is only one spool, contamination cannot keep the spools from shifting into their correct relationship with each other. The extra pressure drops, needed to overcome the spring forces in the earlier designs, have been eliminated all together. Also, the number of spools has been reduced from two or three down to a single spool, thus reducing the cost to manufacture the finished valve. Because there is only one spool, clearances are closer. There is less internal leakage, more accuracy while the cylinders are in motion. This closer clearance tends to lock the loads rather than transfer oil from one cylinder to the other.

US Patent:

6651688, Nov 25, 2003

Filed:

Dec 6, 2001

Appl. No.:

10/015927

Inventors:

Glen Brand - Omaha NE 68134
Timmy L. Chew - Council Bluffs IA 51503

International Classification:

G05D 1103

US Classification:

137 98, 137101, 91515, 91532

Abstract:

A divider combiner valve using only one spool without any springs. The correct holes open and close by ball and seat type check valves although these could be a poppet or disk as well and these valves may be located in the valve body, the spool, or both. These are simple and reliable. There is no chance of the holes not being in the correct location. Since there is only one spool, contamination cannot keep the spools from shifting into their correct relationship with each other. The extra pressure drops, needed to overcome the spring forces in the earlier designs, have been eliminated all together. Also, the number of spools has been reduced from two or three down to a single spool, thus reducing the cost to manufacture the finished valve. Because there is only one spool, clearances are closer. There is less internal leakage, more accuracy while the cylinders are in motion.

US Patent:

43677630, Jan 11, 1983

Filed:

Mar 9, 1981

Appl. No.:

6/242094

Inventors:

Glen Brand - Omaha NE

International Classification:

F15B 1304

US Classification:

137106

Abstract:

An automatic four-way valve hydraulically operated for extending and retracting a cylinder, which is spring-biased to the retract attitude until it is fully retracted whereupon a pressure build-up in a chamber between the spool and the valve body overrides the spring causing the valve spool to move to the neutral position.

US Patent:

45150222, May 7, 1985

Filed:

Jun 10, 1983

Appl. No.:

6/502917

Inventors:

Glen Brand - Omaha NE

International Classification:

G01F 110

US Classification:

7386179

Abstract:

A device installed in the reservoir drain line of a hydraulic pump or motor provides for the visual observation of an internally housed turbine whose rotations may be counted and, after comparing with elapsed time, used to determine, first, its revolutions per minutes and, then, by referring to a conversion chart, the fluid velocity of oil loss to the reservoir. If the loss to reservoir is greater than a known acceptable standard, the pump or motor may be repaired, overhauled or replaced.

US Patent:

45208417, Jun 4, 1985

Filed:

Dec 27, 1983

Appl. No.:

6/565662

Inventors:

Glen Brand - Omaha NE
Timmy L. Chew - Omaha NE

International Classification:

F15B 1304

US Classification:

137270

Abstract:

A four-way valve with a built-in flow control function which is convertible between a two port meter-in mode and a two port meter-out mode; and, alternatively, from a two port meter-out mode to a three port meter-in mode.

US Patent:

49954229, Feb 26, 1991

Filed:

Nov 13, 1989

Appl. No.:

7/434191

Inventors:

Timmy L. Chew - Council Bluffs IA
Glen Brand - Omaha NE

Assignee:

Brand Hydraulics Co. Inc. - Omaha NE

International Classification:

G05D 701

US Classification:

137504

Abstract:

A pressure compensated flow control valve including a body member having an axial bore extending to a closed end and a number of radially aligned ports formed near the closed end. A cylindrical spool is disposed within the axial bore and is movable between a controlled flow position where the spool extends over a portion of the radial ports and a reverse flow position where the radial ports are unobstructed. An orifice formed in an end plate of the spool is sized to allow a predetermined flow rate.