Fluid dispenser apparatus
First Claim
1. A fluid dispenser, comprising:
- (a) a body member having a fluid communication channel and a dose cylinder of a predetermined volume, said fluid communication channel being communicatively connected with said dose cylinder;
(b) a fluid egress conduit communicatively connected to said dose cylinder;
(c) a dose valve positioned and arranged to govern fluid flow from said fluid communication channel to said dose cylinder;
(d) a piston valve positioned and arranged to govern fluid flow out of said fluid egress conduit;
(e) a piston member having a piston head, a distal end and a piston rod connecting said piston head to said distal end, said piston head being sealingly disposed within said dose cylinder;
(f) a trigger member attached to said distal end of said piston member; and
(g) a dispensing mechanism positioned and arranged to dispense measured doses out of said fluid egress conduit, said dispensing mechanism including;
(i) a stop member having an engagement part; and
(ii) at least one abutment formed on said piston member for contacting said engagement part and for limiting motion of said piston member, and wherein said piston rod has a cylindrically-shaped surface, said at least one abutment comprising a plurality of abutments circumferentially spaced around and staggered lengthwise on said piston rod surface, each of said plurality of abutments corresponding to a predetermined range of longitudinal movement by said piston member.
1 Assignment
0 Petitions
Accused Products
Abstract
A fluid dispenser used to administer fixed or adjustable doses of fluids in oral, intranasal, or injectable applications. The dispenser may be used to draw off fluid from a flexible or rigid bulk container or to draw fluid from a mounted flexible or rigid container such as a sealed-end bag or bottle, or a threaded bag or bottle. The fluid dispenser generally comprises: a connection member communicatively connected to a fluid source container; a body member having a dose cylinder communicatively connected to the connection member; a piston member operationally related to the dose cylinder and spring biased in an extended position; and a trigger member attached to the piston member and communicatively connected to the dose cylinder through the piston member. The dispenser may include an automatic venting feature to assist with the smooth, easy flow of fluid during an application and to prevent contaminants from being suctioned back into the container. The dispenser may also include a dispensing mechanism for dispensing measured doses, a protective cap, insulation and padding.
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Citations
31 Claims
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1. A fluid dispenser, comprising:
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(a) a body member having a fluid communication channel and a dose cylinder of a predetermined volume, said fluid communication channel being communicatively connected with said dose cylinder;
(b) a fluid egress conduit communicatively connected to said dose cylinder;
(c) a dose valve positioned and arranged to govern fluid flow from said fluid communication channel to said dose cylinder;
(d) a piston valve positioned and arranged to govern fluid flow out of said fluid egress conduit;
(e) a piston member having a piston head, a distal end and a piston rod connecting said piston head to said distal end, said piston head being sealingly disposed within said dose cylinder;
(f) a trigger member attached to said distal end of said piston member; and
(g) a dispensing mechanism positioned and arranged to dispense measured doses out of said fluid egress conduit, said dispensing mechanism including;
(i) a stop member having an engagement part; and
(ii) at least one abutment formed on said piston member for contacting said engagement part and for limiting motion of said piston member, and wherein said piston rod has a cylindrically-shaped surface, said at least one abutment comprising a plurality of abutments circumferentially spaced around and staggered lengthwise on said piston rod surface, each of said plurality of abutments corresponding to a predetermined range of longitudinal movement by said piston member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A fluid dispenser, comprising:
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(a) a body member having a fluid communication channel and a dose cylinder of a predetermined volume, said fluid communication channel being communicatively joined with said dose cylinder;
(b) a fluid egress conduit communicatively connected to said dose cylinder;
(c) a dose valve positioned and arranged to govern fluid flow from said fluid communication channel to said dose cylinder;
(d) a piston valve positioned and arranged to govern fluid flow out of said fluid egress conduit;
(e) a piston member having a piston head, a distal end, a piston rod connecting said piston head to said distal end, and a fluid egress channel communicatively connected to said dose cylinder, said fluid egress channel extending through said piston head and said piston rod to said distal end, said fluid egress channel forming said fluid egress conduit, said piston head being sealingly fit within said dose cylinder;
(f) a trigger member attached to said distal end of said piston member, said trigger member having a nozzle portion and a nozzle channel communicatively connected to said fluid egress channel, said nozzle portion extending through said nozzle portion;
(g) a connection member having a fluid ingress channel communicatively connected to a fluid source container and to said fluid communication channel; and
(h) a dispensing mechanism for dispensing measured doses out of said fluid egress conduit, said dispensing mechanism including a stop member having an engagement part, and further including at least one abutment formed on said piston member for contacting said engagement part and for limiting motion of said piston member, each of said at least one abutment comprising an end wall of a longitudinal groove formed on said piston rod, said engagement part fitting and tracking within said at least one longitudinal groove during expansion and compression strokes of said piston member, said piston rod having a circumferencial groove intersecting said at least one longitudinal groove, wherein relative rotational motion between said stop member and said piston member is effected when said engagement part is within said circumferencial groove.
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30. A fluid dispenser, comprising:
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(a) a connection member having a fluid stem constructed to receive a hose, said fluid stem containing a fluid ingress channel communicatively connected to a fluid source container through said hose, said fluid source container having an interior and an exterior;
(b) a body member having a fluid communication channel, a dose cylinder of a predetermined volume, and a dose valve, said fluid communication channel being communicatively joined with said fluid ingress channel and said dose cylinder, said dose valve being positioned between said fluid communication channel and said dose cylinder, said dose valve governing fluid flow from said fluid communication channel to said dose cylinder, said body member further having a storage container sized to store a plurality of needles, said storage container having a closure;
(c) a piston member having a piston head, a distal end, a piston valve, and a fluid egress channel communicatively connected to said dose cylinder, said fluid egress channel extending through said piston head and said piston rod to said distal end, said piston head having a circumference, a groove formed around said circumference, an annular gasket placed within said groove to form a sealing fit within said dose cylinder, said piston valve being positioned and arranged to govern fluid flow out of said fluid egress channel, said piston member being biased in an extended position by a spring, said spring being positioned around said piston member; and
(d) a trigger member attached to said distal end of said piston member, said trigger member having a nozzle channel communicatively connected to said fluid egress channel, said trigger member including at least one grip formed to interface with at least one finger, said spring being positioned in between said trigger member and said dose cylinder.
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31. A fluid dispenser, comprising:
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(a) a body member having a fluid communication channel and a dose cylinder of a predetermined volume, said fluid communication channel being communicatively connected with said dose cylinder;
(b) a fluid egress conduit communicatively connected to said dose cylinder;
(c) a dose valve positioned and arranged to govern fluid flow from said fluid communication channel to said dose cylinder;
(d) a piston valve positioned and arranged to govern fluid flow out of said fluid egress conduit;
(e) a piston member having a piston head, a distal end and a piston rod connecting said piston head to said distal end, said piston head being sealingly disposed within said dose cylinder;
(f) a trigger member attached to said distal end of said piston member; and
(g) a dispensing mechanism positioned and arranged to dispense measured doses out of said fluid egress conduit, said dispensing mechanism including;
(i) a stop member having an engagement part; and
(ii) at least one abutment formed on said piston member for contacting said engagement part and for limiting motion of said piston member, wherein said at least one abutment comprises an end wall of a longitudinal groove formed on said piston rod, said engagement part fitting and tracking within said at least one longitudinal groove during expansion and compression strokes of said piston member.
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Specification