Appeal No. 1998-1970
Application No. 08/587,134
APPENDIX
13. A sanitary toilet system comprising:
a bowl having an open upper end and a bottom discharge
outlet;
a tank for holding a quantity of flush water, said tank
having an inlet through which said tank is filled with
water;
a manually operable pump at least partially disposed in
said tank for pumping flush water from said tank to
said toilet bowl, said pump having a generally upright
pump body defining an axis and having a lower end, said
pump body having a water inlet with a valve at said
lower end for receiving water from said tank and a pump
outlet at said lower end through which water is pumped
to said bowl; and
means forming a conduit between said pump outlet and
said toilet bowl whereby water pumped through said pump
outlet is delivered to said toilet bowl;
said pump further having a piston slidable within said
pump body for pumping movement axially thereof, said
piston being upwardly movable within said pump body
away from said lower end so as to draw water into said
pump body through said inlet and said piston being
downwardly movable within said pump body toward said
pump outlet so as to force water from said pump body
through said pump outlet, means forming an opening in
said pump body above said piston whereby water in said
pump body can flow between said tank and said pump body
and a clearance between said piston and said pump body
so that some of the water in said pump body escapes
movement out of said pump body when said piston is
moved downward by flowing through said clearance
between said piston and said pump body whereby
movement of said piston in said pump body is with
A1
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