Patent US3880331A successfully refreshed from Google Patents.
US3880331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensing tool and cartridge for viscous materials
Assignee: PEACE INDUSTRIES Ltd 1100 HICKS RD ROLLING MEADOWS IL A CORP OF
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Filing: 1973-05-21
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Granted: 1975-04-29
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Expires: 1993-05-21
Abstract
Abstract A dispensing cartridge for viscous materials adapted for use in combination with pneumatically-powered dispensers comprising a cylindrical body for containing the viscous material having for closure at one end a flat end having a dispensing opening and a tip integrally extending therefrom to direct the dispensing of said materials and for closure at the opposite end a plunger cap assembly comprising a cup shaped plunger cap having a flat closed end and having a diameter for tight sliding engagement with the inside of said cylindrical body, the ratio of the depth of said plunger cap to the diameter of the plunger cap being about 0.25 to 1 and a rim having a lip extending around the circumferential edge of one end for tight engagement with said opposite end of said cylindrical body and the other end adapted to fit in tight engagement with the end of said plunger cap opposite said closed end thereby sealing said cartridge in air tight relation. The cartridges are especially suitable for use in pneumatic dispensers which have means for mechanically disengaging the plunger cap from the lip so that the plunger cap acts as a plunger for exuding the viscous material.
Inventors
- 👤 Garry R Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:42
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/015; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; G01F11/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
206 words
A pneumatically powered tool for controlled dispensing of a fluid viscous material in combination with a replaceable cartridge of the viscous material; said tool comprising a hollow housing connectable to a source of pneumatic pressure, an elongated cartridge-accommodating section extending from said housing and having an outer end and an inner end, the latter being connected to said housing, a dispensing piece mounted on said section outer end, protruding means carried by said housing adjacent the inner end of said elongated section for extending a limited distance into said elongated section, and control means on said housing for regulating pneumatic pressure at said section inner end; said cartridge including an elongated sleeve removably mounted within said section, a dispenser cap mounted on an end of said sleeve and in engagement with said dispensing piece, a closure cap initially mounted on the opposite end of said sleeve in a static sealed position and being released from said static sealed position by said protruding means when said cartridge is accommodated within said elongated section, said closure cap, subsequent to being released from the static sealed position being movable in a sealed relation longitudinally of said sleeve towards the dispenser cap upon a predetermined pneumatic pressure being exerted thereon.
Claim 2
Dependent Claim
206 words
A pneumatically powered tool for controlled dispensing of a fluid viscous material in combination with a replaceable cartridge of the viscous material; said tool comprising a hollow housing connectable to a source of pneumatic pressure, an elongated cartridge-accommodating section extending from said housing and having an outer end and an inner end, the latter being connected to said housing, a dispensing piece mounted on said section outer end, protruding means carried by said housing adjacent the inner end of said elongated section for extending a limited distance into said elongated section, and control means on said housing for regulating pneumatic pressure at said section inner end; said cartridge including an elongated sleeve removably mounted within said section, a dispenser cap mounted on an end of said sleeve and in engagement with said dispensing piece, a closure cap initially mounted on the opposite end of said sleeve in a static sealed position and being released from said static sealed position by said protruding means when said cartridge is accommodated within said elongated section, said closure cap, subsequent to being released from the static sealed position being movable in a sealed relation longitudinally of said sleeve towards the dispenser cap upon a predetermined pneumatic pressure being exerted thereon.
Claim 3
Dependent Claim
99 words
The tool and cartridge combination of claim 1 wherein said cartridge sleeve is of cylindrical configuration and said closure cap is cup-shaped and having a substantially flat center portion delimited by an outwardly facing flange portion, the latter being in slideable sealing engagement with the interior surface of said sleeve; said protruding means being a fixed boss portion formed on said housing for abutting the center portion of the closure cap and releasing same from said initial static sealed position, upon said cartridge being inserted into said elongated section and secured between said boss portion and said dispensing piece.
Claim 4
Dependent Claim
80 words
The tool and cartridge combination of claim 2 wherein the end of said sleeve adjacent said protruding means is provided with a rim having a portion thereof in gripping engagement with the flange portion of said closure cap to retain the latter in said initial static sealed position; the ratio of the length of the flange portion to the diameter of said cap center portion being within the range of from about 0.25 to 1.00 to about 0.75 to 1.00.
Claim 5
Dependent Claim
40 words
The tool and cartridge combination of claim 2 wherein said cartridge has a diameter of about 2.50 inches and a length of about 25 inches and the flange portion of the closure cap has a length of about 1 inch.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |