US4251001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer powder supply cartridge
Assignee: 3M Co
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Filing: 1979-10-22
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Granted: 1981-02-17
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Expires: 1999-10-22
Abstract
Abstract A toner supply cartridge for use with an electrographic reproduction machine, having a generally symmetric configuration with a centrally located filling opening. The cartridge contains a second larger opening for dispensing the toner into the copy machine, this opening being sealed prior to use with a permanently attached door. The door is openable after inserting the cartridge into the reproduction machine by pulling an external tab structure which is connected to a section of adhesive tape securing the door in its closed position. This structure minimizes the amount of toner unintentionally escaping from the toner cartridge prior and during its insertion into the reproduction machine.
Inventors
- 👤 Richard D. Hipp, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:27
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0877; G03G15/0881; G03G15/0882
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
235 words
A novel developer powder supply cartridge for use in a copy machine comprising a first part having a plurality of side portions and two end portions defining a trough wherein a first of said end portions has a longitudinally extending semicylindrical spout, a second part having a plurality of side portions and two end portions defining a trough wherein a first of said end portions has a longitudinally extending semicylindrical spout, and wherein one of the side portions has a rectangular opening extending longitudinally over a substantial portion of its area, and wherein said first part and said second part are mated along their open sides to define a multisided bottle-like container having a centrally located and generally cylindrical longitudinally extending spout portion projecting from said first end of said container to afford the filling of said container with developer powder, an elongated rectangular door hingedly mounted to said container and disposed to intromit and close the rectangular opening in said second part when said door is in a closed position, means for securing said door in its closed position to said second part so as to prevent the unintentional escape of developer powder through the rectangular opening, connecting means for removing said securing means after the insertion of said container into a copy machine so as to afford the dispensing of said developer powder into the copy machine, and means for capping said spout.
Claim 2
Dependent Claim
235 words
A novel developer powder supply cartridge for use in a copy machine comprising a first part having a plurality of side portions and two end portions defining a trough wherein a first of said end portions has a longitudinally extending semicylindrical spout, a second part having a plurality of side portions and two end portions defining a trough wherein a first of said end portions has a longitudinally extending semicylindrical spout, and wherein one of the side portions has a rectangular opening extending longitudinally over a substantial portion of its area, and wherein said first part and said second part are mated along their open sides to define a multisided bottle-like container having a centrally located and generally cylindrical longitudinally extending spout portion projecting from said first end of said container to afford the filling of said container with developer powder, an elongated rectangular door hingedly mounted to said container and disposed to intromit and close the rectangular opening in said second part when said door is in a closed position, means for securing said door in its closed position to said second part so as to prevent the unintentional escape of developer powder through the rectangular opening, connecting means for removing said securing means after the insertion of said container into a copy machine so as to afford the dispensing of said developer powder into the copy machine, and means for capping said spout.
Claim 3
Dependent Claim
31 words
A cartridge as claimed in claim 1 wherein said door is hingedly mounted to said cartridge with at least one section of adhesive tape affixed between said cartridge and said door.
Claim 4
Dependent Claim
81 words
A cartridge as claimed in claim 1 wherein said means for securing said door in its closed position comprises a strip of adhesive tape having a length and width slightly exceeding the length and width of said rectangular opening of said cartridge, affixed to said door and extending beyond said door onto said side portion of said cartridge so as to be affixed across said door and onto said cartridge, thus securing said door in its closed position to said cartridge.
Claim 5
Dependent Claim
126 words
A cartridge as claimed in claim 1 wherein said connecting means for removing said securing means comprises a nonadhesive strip of material connected to said securing means as its terminates on the first end of said cartridge, said connecting strip then doubling back upon and adjacent to said adhesive tape until it reaches the second end of said cartridge, said connecting strip continuing around the intersection between second end and the side of said cartridge containing said door, said connecting strip continuing along a portion of said second end until it terminates and is fastened to said cartridge wherein the portion of said connecting strip located adjacent the second end of said container affords a tab portion which can be pulled to remove said adhesive tape.
Claim 6
Dependent Claim
29 words
A cartridge as claimed in claim 1 wherein said container has a generally hexagonal cross section with the intersection of its longitudinal sides being equal distance from said spout.
Claim 7
Dependent Claim
38 words
A cartridge as claimed in claim 1 wherein said container is molded of a polymeric material and wherein said container comprises two generally symmetric half sections affording ease of molding, said sections being mated together forming said container.
Claim 8
Dependent Claim
43 words
A cartridge as claimed in claim 1 wherein said means for capping said cartridge comprises an external thread around the periphery of said spout, and a cap having an internal thread disposed so as to mate with said external thread of said spout.
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) | 1984-02-17 | 1984-08-18 | 1985-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-17 | 1988-08-18 | 1989-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-17 | 1992-08-18 | 1993-02-17 | $7700.00 | Window Closed / Lapsed |