Robert J 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:

62837273, Sep 4, 2001

Filed:

Apr 18, 2000

Appl. No.:

9/551500

Inventors:

David M. Borish - Morrisville PA
Robert F. Bean - Spring City PA
Richard J. Caspar - West Chester PA

Assignee:

Milton Bay - Ivyland PA

International Classification:

F04B 1700
F04B 3500

US Classification:

417379

Abstract:

The compact, easily useable metering pump results from a structure including a housing (20) with a pumping chamber (34) within the housing (20). A diaphragm (36) is located in the pumping chamber (34). An inlet includes a check valve (50) for allowing fluid to flow to one side of the diaphragm (36) but not the reverse and an outlet including a check valve (56) allows fluid to flow from the pumping chamber (34) but not into it. A pneumatically operated hydraulic pump (16) is located in the housing (20) and cycles the diaphragm (36).