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US4526490A Expired / Lapsed US ⏱️ 0.0 years remaining

Dispenser for flowable material

Assignee: Dentsply Research and Development Corp
•
Filing: 1983-08-29
•
Granted: 1985-07-02
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Expires: 2003-08-29
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Abstract

Abstract A dispenser for flowable material having a squeezable container formed with filling and discharge openings at opposite ends, a combination handle and closure member connectable to the filling opening, and a flexible discharge spout and second closure member being connectable selectively to the discharge opening of said container, the connections all having snap-acting co-engaging members and the discharge spout being elongated and flexible and of uniform very small diameter to control discharge of precise amounts of material directed to desired locations of use by an operator holding the dispenser pen-like in one hand.

Inventors

  • 👤 Richard E. Welsh

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 12:19
CPC Classifications
B; B65; B65D; B65D1/00; B65D1/32; A; A61; A61M; A61M3/00

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 188 words
A dispenser adapted for manual manipulation comprising in combination, a container which is circular in cross-section having flexible walls adapted to be squeezed toward each other to effect discharge of material and having a filling opening at one end and a discharge opening at the opposite end, a flanged plug-like first closure member having an elongated handle member of substantially smaller diameter than said container extending axially from one end of said container and having a length approximately twice that of said container, said first closure member being separably connected tightly to the filling opening of said container and said handle being adapted to facilitate manually holding the container between the thumb and forefinger of a user similarly to the manner of holding a pen when writing to guide the dispenser when effecting discharge of contents of said container at desired locations, the discharge opening being adapted to be connected selectively to a second closure member and a tubular discharge spout, and the filling end of said container having an enlarged collar to facilitate effecting a leakproof connection of said filling end with said flanged first closure member.
Claim 2
Dependent Claim 188 words
A dispenser adapted for manual manipulation comprising in combination, a container which is circular in cross-section having flexible walls adapted to be squeezed toward each other to effect discharge of material and having a filling opening at one end and a discharge opening at the opposite end, a flanged plug-like first closure member having an elongated handle member of substantially smaller diameter than said container extending axially from one end of said container and having a length approximately twice that of said container, said first closure member being separably connected tightly to the filling opening of said container and said handle being adapted to facilitate manually holding the container between the thumb and forefinger of a user similarly to the manner of holding a pen when writing to guide the dispenser when effecting discharge of contents of said container at desired locations, the discharge opening being adapted to be connected selectively to a second closure member and a tubular discharge spout, and the filling end of said container having an enlarged collar to facilitate effecting a leakproof connection of said filling end with said flanged first closure member.
Claim 3
Dependent Claim 60 words
The dispenser according to claim 1 further characterized by said plug and filling opening having snap-acting means operable to secure the connection of the plug and container and also sealing the contents of said container, and said plug having a flange abutting the outer end of the filling opening of said container to facilitate positioning the plug in said opening.
Claim 4
Dependent Claim 48 words
The dispenser according to claim 1 further characterized by said discharge opening being a longitudinal port member and said tubular discharge spout having a cup-shaped portion complementary to and tightly receiving said port member, and said port member and discharge spout respectively having a co-engaging snap-acting connecting means.
Claim 5
Dependent Claim 43 words
The dispenser according to claim 3 further characterized by said tubular discharge spout being flexible and of uniform diameter which is very substantially smaller than that of said container and suitable to regulate a precise quantity of discharge of material to desired locations.

References Cited (Backward Citations)

US2734665A Cited
US2049973A Cited
US2104651A Cited
US2219604A Cited
US2687727A Cited
US3133310A Cited
US3088470A Cited
US3879141A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-07-01 1988-12-31 1989-07-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-07-01 1992-12-31 1993-07-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-07-01 1996-12-31 1997-07-02 $7700.00 Window Closed / Lapsed

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