US4801008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 13:27
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.
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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) | 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 |