Title:
SEAL SYSTEM FOR GEAR PUMPS
Document Type and Number:
WIPO Patent Application WO/2010/132154
Kind Code:
A3
Abstract:
A pump adapted for coupling in a fluid circuit between a source of coating material and a dispensing device. The pump includes an operating member which extends through a pump housing to a location adjacent the fluid circuit. The passage of the operating member to a location adjacent the fluid circuit includes a seal system permit operation of the pump while reducing the likelihood of leakage of the coating material from the circuit out of the housing along the operating member. The seal system includes at least first and second seals defining between them a flushable seal chamber facing a pump chamber containing the coating material being pumped.
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Inventors:
SCHAUPP JOHN F (US)
SELMEK MARTIN J (US)
SELMEK MARTIN J (US)
Application Number:
PCT/US2010/029906
Publication Date:
May 12, 2011
Filing Date:
April 05, 2010
Export Citation:
Assignee:
ILLINOIS TOOL WORKS (US)
SCHAUPP JOHN F (US)
SELMEK MARTIN J (US)
SCHAUPP JOHN F (US)
SELMEK MARTIN J (US)
International Classes:
F04C2/18; F04C15/00
Domestic Patent References:
| WO2008135326A1 | 2008-11-13 |
Foreign References:
| US5180297A | 1993-01-19 | |||
| US4515512A | 1985-05-07 | |||
| US6585481B1 | 2003-07-01 | |||
| EP0643223A1 | 1995-03-15 | |||
| DE19515094A1 | 1995-11-09 | |||
| EP0412634A2 | 1991-02-13 | |||
| US20050087068A1 | 2005-04-28 | |||
| FR2260715A1 | 1975-09-05 | |||
| US20070205561A1 | 2007-09-06 |
Attorney, Agent or Firm:
HAUPTMAN, Benjamin J. (LLP1700 Diagonal Road, Suite 30, Alexandria Virginia, US)
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