Patent US4801008A successfully refreshed from Google Patents.
US4801008A
Expired / Lapsed
US
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Dispensing device having static mixer in nozzle
Assignee: WR Grace and Co Conn
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Filing: 1988-06-24
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Granted: 1989-01-31
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Expires: 2008-06-24
Abstract
Abstract Disclosed is a disposable cartridge including a chamber containing a plurality of inter-reacting components of, e.g., an adhesive system. The components are separated from each other by a barrier film formed by reaction therebetween. The components are expelled through a nozzle housing a static mixing element, the nozzle being adapted to trap the barrier film to prevent clogging. The nozzle includes a frusto-conical entry portion designed to ensure a constant mix-ratio profile between the components.
Inventors
- 👤 Thomas R. Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:45
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00553; B05C17/00503; B05C17/00516; B29; B29B; B29B7/00; B29B7/30; B29B7/32; B29B7/325; B29B7/74; B29B7/7438; B65; B65D; B65D81/00; B65D81/32; B65D81/3255; B05C17/01
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
117 words
A dispensing device, containing a plurality of interactive components adapted to be mixed together to form a self-setting composition and comprising: a chamber portion containing said interactive components, said components being separated by one or more reacted barriers, and a nozzle means for mixing and dispensing said components comprising a frustro-conical portion including an interior wall and having its base disposed at one end of the chamber portion and an elongated portion disposed at the apex of the frustro-conical portion, the elongated portion having static mixing means therein, and entrapment means disposed within said frustro-conical portion and spaced apart from the interior wall, adapted to trap said reacted barrier while allowing said interactive components to flow therepast.
Claim 2
Dependent Claim
117 words
A dispensing device, containing a plurality of interactive components adapted to be mixed together to form a self-setting composition and comprising: a chamber portion containing said interactive components, said components being separated by one or more reacted barriers, and a nozzle means for mixing and dispensing said components comprising a frustro-conical portion including an interior wall and having its base disposed at one end of the chamber portion and an elongated portion disposed at the apex of the frustro-conical portion, the elongated portion having static mixing means therein, and entrapment means disposed within said frustro-conical portion and spaced apart from the interior wall, adapted to trap said reacted barrier while allowing said interactive components to flow therepast.
Claim 3
Dependent Claim
26 words
A cartridge according to claim 1 wherein said static mixing means extends beyond the elongated portion and into said frustro-conical portion and comprises said entrapment means.
References Cited (Backward Citations)
US1123035A
Cited
US2802648A
Cited
US3286992A
Cited
US3593964A
Cited
US3521745A
Cited
US3941355A
Cited
US3915297A
Cited
US4193698A
Cited
US4353463A
Cited
US4522504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |