Patent US5195663A successfully refreshed from Google Patents.
US5195663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and dispensing assembly for preparations such as dental materials
Assignee: 3M Co
•
Filing: 1991-11-25
•
Granted: 1993-03-23
•
Expires: 2011-11-25
Abstract
Abstract A mixing and dispensing assembly includes a dispensing device having a receptacle. A capsule is removably received in the receptacle. The capsule has a single chamber and piston with a handle portion that is movable within the confines of the chamber. A tablet made of compacted powder is received in the chamber, and the piston is separated from the capsule when desired in order to add a liquid component and make the preparation.
Inventors
- 👤 Thomas W. Martin
- 👤 Craig S. Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:21
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; A61C5/68; B; B01; B01F; B01F31/00; B01F31/20; B01F31/265; B01F33/00; B01F33/50; B01F33/501; B01F33/5011
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
An assembly for mixing and dispensing preparations comprising: a dispensing device having a housing with a receptacle, a lever movably connected to the housing and a plunger connected to said lever, said plunger being movable toward said receptable upon movement of said lever; and a mixing and dispensing capsule removably received in said receptacle, said capsule including a chamber having an outlet and a piston movable in said chamber toward said outlet as said lever moves said plunger toward said receptacle, said piston being removable from said chamber and having a handle portion with a recess for gripping said piston, said handle portion being moveable within the confines of said chamber, wherein said piston includes a head having a certain diameter, and wherein said handle portion includes a flange having a diameter, wherein said diameter of said flange is equal to said certain diameter.
Claim 2
Dependent Claim
144 words
An assembly for mixing and dispensing preparations comprising: a dispensing device having a housing with a receptacle, a lever movably connected to the housing and a plunger connected to said lever, said plunger being movable toward said receptable upon movement of said lever; and a mixing and dispensing capsule removably received in said receptacle, said capsule including a chamber having an outlet and a piston movable in said chamber toward said outlet as said lever moves said plunger toward said receptacle, said piston being removable from said chamber and having a handle portion with a recess for gripping said piston, said handle portion being moveable within the confines of said chamber, wherein said piston includes a head having a certain diameter, and wherein said handle portion includes a flange having a diameter, wherein said diameter of said flange is equal to said certain diameter.
Claim 3
Dependent Claim
25 words
The assembly of claim 1, wherein said capsule includes a groove, and wherein said dispensing device includes a retention wall for engagement with said groove.
Claim 4
Dependent Claim
19 words
The assembly of claim 2, wherein said groove is of a size for friction-fit engagement with said retention wall.
Claim 5
Dependent Claim
22 words
The assembly of claim 1, and including a tablet received in said chamber, said tablet comprising a quantity of compacted powder material.
References Cited (Backward Citations)
US1704678A
Cited
US2193489A
Cited
US3348545A
Cited
US3532521A
Cited
US3766917A
Cited
US3572337A
Cited
US3739947A
Cited
US3595439A
Cited
US3651994A
Cited
US3684136A
Cited
US3872864A
Cited
US3933961A
Cited
US4198756A
Cited
US4232670A
Cited
US4457712A
Cited
US4330280A
Cited
US4391590A
Cited
US4330280B1
Cited
US4330280B2
Cited
US4391590B1
Cited
US4443390A
Cited
US4450958A
Cited
US4677980A
Cited
US4636198A
Cited
US4737151A
Cited
US5026283A
Cited
US4767326A
Cited
US4972969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-22 | 1996-09-21 | 1997-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-22 | 2000-09-21 | 2001-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-22 | 2004-09-21 | 2005-03-23 | $7700.00 | Window Closed / Lapsed |