Flowable substances dispenser

Claim 2

A fluid dispenser comprising the combination of: a container body and cover and cover therefor including a member having a fluid passageway communicating the exterior thereof to a valve member, said valve member communicating to an expansible member adapted to store fluid therein and be retained within said container body, said valve member having an axially shiftable, unitary elongated mandrel and closure member, having mandrel and closure portions, said mandrel portion extending into and substantially the entire length of said expansible member and said closure portion normally being seated in the closed position to block said fluid passageway.

Claim 3

A fluid dispenser in accordance with claim 1 wherein a valve body member, including a valve seat, encircles said mandrel and closure member and said closure portion acts against said valve seat to block said fluid passageway.

Claim 4

A fluid dispenser in accordance with claim 2 wherein said valve body member has slotted wall portions by which communication into the interior of said expansible member is obtained.

Claim 5

A fluid dispenser in accordance with claim 1 wherein said mandrel and closure mEmber is spring-biased to position said closure portion into the closed position.

Claim 6

A fluid dispenser in accordance with claim 4 including a valve body member in encircling relationship with said mandrel and closure member and wherein the interior of said valve body member is adapted to retain a spring member therein.

Claim 7

A fluid dispenser in accordance with claim 5 additionally including a valve seat in said valve body member and wherein said closure portion has an annular head, the upper surface thereof forming a continuous sealing surface with said valve seat and a lower surface adapted to form an abutting surface for a spring member.

Claim 8

A fluid dispenser in accordance with claim 6 wherein said valve seat and said valve body member are received in nestled relationship by a ferrule member of deformable character and said valve seat is a disc having an annular passageway of the same size as said fluid passageway and communicating thereto.

Claim 9

A fluid dispenser in accordance with claim 7 wherein said disc is retained in position with said valve body member by said overlying ferrule member and said ferrule member has an aligned aperture accommodating said fluid passageway and said annular passageway.

Claim 10

A fluid dispenser in accordance with claim 8 which additionally includes a coil spring retained within said valve body member acting against the interior thereof and said lower surface of said closure portion.

Claim 11

A fluid dispenser in accordance with claim 9 wherein said expansible member is retained in fluid-tight secured relationship and a snap ring member adapted to engage the interior wall of said container, positions the assembly within the neck of said container body.

Claim 12

A viscous fluid dispenser comprising the combination of: a container body, the walls thereof forming a inclosure open to external atmosphere; a cover supported on said container body and having a fluid passageway communicating the exterior thereof to a valve member disposed in supported relationship within said inclosure, said valve member communicating to and supporting a flexible, expansible bladder, adapted to store viscous fluid therein, within said closure; said bladder, in the unfilled state being pretensioned in the radial and linear directions; and an axially shiftable unitary elongated mandrel and closure member, having mandrel and closure portions and being supported within said valve member and said bladder, said mandrel portion extending substantially the entire length of said bladder and said closure portion normally being seated in the closed position to block said fluid passageway.

Claim 13

A viscous fluid dispenser comprising the combination of: a container body, the walls thereof forming a inclosure open to external atmosphere; a cover supported on said container body and having a fluid passageway communicating the exterior thereof to a valve member disposed in supported relationship within said inclosure, said valve member communicating to and supporting a flexible, expansible bladder, adapted to store viscous fluid therein, within said closure; said bladder, in the unfilled state being pretensioned in the radial and linear directions; and an axially shiftable unitary elongated mandrel and closure member, having mandrel and closure portions and being supported within said valve member and said bladder, said mandrel portion extending substantially the entire length of said bladder and said closure portion normally being seated in the closed position to block said fluid passageway.