AIR MOTOR HAVING DROP TUBE WITH KNUCKLE ENDS

Title:

AIR MOTOR HAVING DROP TUBE WITH KNUCKLE ENDS

Document Type and Number:

WIPO Patent Application WO/2011/094607

Kind Code:

A3

Abstract:

An air motor for a pump assembly including a drop tube communicating between an upper chamber port and a top plate port and including a longitudinal axis that is at an angle of between about 0° and 10° with respect to each of the upper chamber longitudinal axis and the top plate port longitudinal axis. The drop tube has a substantially constant internal diameter, a first generally bulbous end, a second generally bulbous end, and first and second slots defined in the respective first and second bulbous ends. First and second seals are positioned in the respective first and second slots, and the first and second seals air-tightly seal an outer surface of the drop tube within the upper chamber port and the top plate port.

Inventors:

HEADLEY THOMAS R (US)

Application Number:

PCT/US2011/023016

Publication Date:

December 29, 2011

Filing Date:

January 28, 2011

Export Citation:

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Assignee:

INGERSOLL RAND CO (US)
HEADLEY THOMAS R (US)

International Classes:

F04B17/00; F04B39/00; F15B7/00; F15B7/08

Foreign References:

US4181066A	1980-01-01
US6123008A	2000-09-26
US6722256B2	2004-04-20
US6736612B2	2004-05-18

Other References: