Fluid transfer device

Claim 1

A fluid transfer device comprising an elongate casing, one end wall at one end of said casing, the other end of said casing being sufficiently open to receive a user's hand and configured to define a ground engageable plane for stably supporting said casing in upright relation, a fluid port in said one end wall, an expansile and collapsile container having a fluid port and located within said casing and having its fluid port secured in communication with the casing fluid port, said container being expansile away from said one end wall to receive fluid through said ports and collapsile toward said one wall to expel fluid through said ports, a plunger shiftable in said casing between extreme positions toward and away from said one end wall to enable expansion and effect collapse of said container, resilient means urging said plunger toward said one wall, said plunger and resilient means being entirely within said casing in said extreme positions, outwardly flaring filling means connected in fluid communication with said ports and facing upwardly when said casing is supported in its upward relation for collecting and guiding fluid to said container, closure means for said filling means, and valved discharge means connected to said ports between the latter and said filling means for selectively discharging fluid from said container under the force of said resilient means.