Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PUMP SEALING APPARATUS
Document Type and Number:
WIPO Patent Application WO2005089389
Kind Code:
A3
Abstract:
A sealing arrangement for a pump includes a first member having a peripheral wedge-shaped pocket; a second member with a rim opposed to the pocket; and a diaphragm disposed between the two members. The diaphragm includes a central stem, a disk-shaped head attached to the stem, and an upstanding bead disposed around the periphery of the head. The bead includes a first angled surface and a second angled surface. The bead is received in the pocket so as to form two separate, spaced-apart sealing surfaces between the diaphragm and the first member. The sealing arrangement may also include a gasket made from a resilient material and having a flat web with a circular cross­section bead disposed in a gland between two members. The dimensions of the bead and the gland are selected such that the bead is diametrically compressed at least about 40% from its free state.

Inventors:
CURTIS DOUGLAS ALLAN (US)
Application Number:
US2005008777W
Publication Date:
August 10, 2006
Filing Date:
March 16, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HARGRAVES TECHNOLOGY CORP (US)
CURTIS DOUGLAS ALLAN (US)
International Classes:
F16J3/00; F04B45/00
Foreign References:
US20040076526A12004-04-22
US6338295B12002-01-15
US6776591B12004-08-17
US5275541A1994-01-04
Other References:
See also references of EP 1725792A4
Download PDF: