Leo J Schlachter

US Patent:

49827588, Jan 8, 1991

Filed:

Jan 30, 1990

Appl. No.:

7/472105

Inventors:

Leo J. Schlachter - Edgerton OH

Assignee:

The ARO Corporation - Bryan OH

International Classification:

G05D 1608

US Classification:

13750542

Abstract:

A diaphragm operated pressure regulator has a housing with a flow passage therethrough. The diaphragm in the housing is operatively connected to a ball valve in the flow passage for positioning the ball valve to control fluid flow through the flow passage at a predetermined pressure value. The diaphragm cooperates with the housing to define a displacement chamber. The displacement chamber is filled with fluid for backing up the diaphragm over its entire surface exposed to the displacement chamber. The diaphragm is preferably not perforated. A displacement piston cooperates with the displacement chamber to control the force applied to the diaphragm and thereby the flow through the flow passage. The displacement piston is adjustable into and out of the displacement chamber to vary the force applied to the diaphragm.

US Patent:

59512598, Sep 14, 1999

Filed:

Jun 16, 1997

Appl. No.:

8/876521

Inventors:

Richard K. Gardner - Montpelier OH
Leo J. Schlachter - Edgerton OH

Assignee:

Ingersoll-Rand Company - Woodcliff Lake NJ

International Classification:

F04B 300
F04B 500
F04B 704

US Classification:

417254

Abstract:

A reciprocating pump, including: a hollow tube having a first end; a hollow foot valve connected to the tube, the tube and foot valve defining a chamber, said foot valve having a first foot valve end and at least one inlet port formed at the first foot valve end; reciprocating member adapted to be movable in the chamber along a path defined by an axis; drive motor for moving the reciprocating means between a first retracted position and a second extended position; and a primer element connected to the reciprocating means, said primer element having a first dimension and a second dimension, said second dimension being equal to at least half of the first dimension.