Title of Invention

AN IMPROVED HAND PUMP WITH A LIGHT WEIGHT PLUNGER ASSEMBLY.

Abstract TITLE: AN IMPROVED HAND PUMP WITH A LIGHT WEIGHT PLUNGER ASSEMBLY. The present invention provides an improved hand pump with a handle for moving a plunger assembly up and down and inside a pump barrel allowing pumped water to escape through perforations in the plunger assembly. The three-part light weight plunger assembly comprises a valve seat, a one way valve arrangement and a valve cage. The valve seat and the valve cage are moulded out of plastic material with the valve seat being screwed on to the valve cage. The improved hand pump besides being easier to operate provides hygienic potable water by eliminating or reducing the chances of contamination from the leather bucket used in a conventional hand pump.
Full Text

Documents:

1907-cal-1998-granted-abstract.pdf

1907-cal-1998-granted-claims.pdf

1907-cal-1998-granted-correspondence.pdf

1907-cal-1998-granted-description (complete).pdf

1907-cal-1998-granted-drawings.pdf

1907-cal-1998-granted-examination report.pdf

1907-cal-1998-granted-form 1.pdf

1907-cal-1998-granted-form 2.pdf

1907-cal-1998-granted-form 3.pdf

1907-cal-1998-granted-letter patent.pdf

1907-cal-1998-granted-pa.pdf

1907-cal-1998-granted-reply to examination report.pdf

1907-cal-1998-granted-specification.pdf


Patent Number 214638
Indian Patent Application Number 1907/CAL/1998
PG Journal Number 07/2008
Publication Date 15-Feb-2008
Grant Date 13-Feb-2008
Date of Filing 26-Oct-1998
Name of Patentee NARENDRA KUMAR JHUNJHUNWALA
Applicant Address SAMBHUNATH MULLICK LANE, 2ND FLOOR, CALCUTTA-700 007.
Inventors:
# Inventor's Name Inventor's Address
1 NARENDRA KUMAR JHUNJHUNWALA SAMBHUNATH MULLICK LANE, 2ND FLOOR, CALCUTTA-700 007.
PCT International Classification Number F04B9/14,F04B47/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA