Robert C Bean

US Patent:

8454328, Jun 4, 2013

Filed:

Jan 12, 2009

Appl. No.:

12/352041

Inventors:

Taya Kotlyar - Warwick PA, US
Joel E. Higbee - Horsham PA, US
Robert Bean - Spring City PA, US
Alex Kotlyar - Warwick PA, US

Assignee:

Milton Roy Company - Ivyland PA

International Classification:

F04B 17/00

US Classification:

417415

Abstract:

A reciprocating pump assembly comprises: a motor with a rotary motor drive shaft; a cam coupled to the motor drive shaft with an axis of rotation and a cam channel cut generally axially into a radial face of the cam; and multiple reciprocating pump units arranged radially about the cam axis of rotation, each with an inlet valve, an outlet valve, a plunger and a plunger sleeve, with a free end of its plunger coupled to the cam by way of a cam follower riding in the cam channel; wherein rotation of the motor output drive shaft causes the plunger in each pump unit to independently reciprocate in its respective sleeve.

US Patent:

51210622, Jun 9, 1992

Filed:

Aug 16, 1990

Appl. No.:

7/568589

Inventors:

Robert F. Bean - Spring City PA
Steven K. Dentel - Newark DE

Assignee:

Milton Roy Company - St. Petersburg FL

International Classification:

G01N 2760

US Classification:

324453

Abstract:

A streaming current detector has a reciprocating piston with a sensing region having a uniform clearance from the casing which is sufficiently large to avoid significant shearing of the particles in the fluid of the sample stream. A separate guiding region of the piston has a sufficiently tight fit in the casing for smooth reciprocation. A relief region of the piston has the largest clearance from the casing to provide a sufficiently large area to control a constant low velocity of the sample fluid.