The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 23, 2002
Filed:
Oct. 27, 2000
Kikuo Ito, Tokyo, JP;
Yamada Corporation, Tokyo, JP;
Abstract
A pressure pump delivers a high viscosity fluid ( B) such as grease from a storage can or drum ( A) sealed by a follower plate unit ( ) attached to a hollow transfer tube ( ). The unit ( ) can be air operated to reciprocate up and down relative to the storage can. The unit ( ) has a body ( ) fitting into the can with fluid guide passage ( ) fitted inside a reciprocating cylinder ( ) attached by a ring plate ( ). An upper plate ( ) is attached to the cylinder ( ) and a lower plate ( ) is attached to body ( ) with a ring sealing member ( ) interposed between the plates ( ). An annular pressure chamber ( ) between body ( ) and cylinder ( ) has a compressed air inlet/outlet port ( ) to provide the required reciprocating movement. The seal member ( ) can act as a bellows to maintain a seal as the cylinder reciprocates vertically.