US4648532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing and discharge capsule
Assignee: Dentsply Research and Development Corp
•
Filing: 1986-05-09
•
Granted: 1987-03-10
•
Expires: 2006-05-09
Abstract
Abstract A combination mixing and discharge capsule for storing separate ingredients which are to be mixed together prior to use and including a container body for one ingredient closed at one end by a slidable piston and the opposite end being displaceably received in a cup-shaped cap which forms a second compartment with a perforated wall of the container body opposite the end containing the piston for receiving a frangible pillow containing a liquid second ingredient to be mixed with the ingredient in the body. The cap has a discharge nozzle extending axially therefrom and when the cap is displaced farther onto the body the innermost wall of the pillow is burst to cause the discharge of the liquid ingredient through the perforated wall end into the container body for mixing with the ingredient therein. After mixing is completed, a puncturing rod is inserted into the nozzle to puncture the opposite wall of the pillow and, when the rod is withdrawn the piston is moved toward the perforated wall to effect discharge of the mixed ingredients through the nozzle.
Inventors
- 👤 Russell D. Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:20
CPC Classifications
A; A61; A61C; A61C5/00; A61C5/60; A61C5/66; A61C5/62; A61C5/64; Y; Y10; Y10S; Y10S215/00; Y10S215/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
225 words
A combination mixing and discharge capsule comprising in combination, a body adapted to contain a first ingredient and having a piston in one end and the opposite end having a perforated wall on the body, a cap displaceably connected over the end of the body having the perforated wall and forming therewith a separate compartment, said cap having a discharge orifice in the form of a nozzle extending outwardly away from the opposite end of said body, a frangible container enclosing a second ingredient and disposed in said separate compartment with a wall oriented toward said perforated wall, means operable to displace said cap towards said piston and farther onto said body until at least the wall of the container oriented toward said perforated wall is ruptured to permit discharge of the container contents through said perforation into said container body for mixing with the ingredient therein, means operable to puncture the opposite wall of said container comprising a piercing rod initially only partially inserted into said nozzle with the inner end out of contact with said container and the inner end of said rod being extendable through said perforation in said opposite wall to effect perforation of said container, and means to move said piston into said body to engage the mixed ingredients and force the same through said discharge nozzle on said cap.
Claim 2
Dependent Claim
225 words
A combination mixing and discharge capsule comprising in combination, a body adapted to contain a first ingredient and having a piston in one end and the opposite end having a perforated wall on the body, a cap displaceably connected over the end of the body having the perforated wall and forming therewith a separate compartment, said cap having a discharge orifice in the form of a nozzle extending outwardly away from the opposite end of said body, a frangible container enclosing a second ingredient and disposed in said separate compartment with a wall oriented toward said perforated wall, means operable to displace said cap towards said piston and farther onto said body until at least the wall of the container oriented toward said perforated wall is ruptured to permit discharge of the container contents through said perforation into said container body for mixing with the ingredient therein, means operable to puncture the opposite wall of said container comprising a piercing rod initially only partially inserted into said nozzle with the inner end out of contact with said container and the inner end of said rod being extendable through said perforation in said opposite wall to effect perforation of said container, and means to move said piston into said body to engage the mixed ingredients and force the same through said discharge nozzle on said cap.
Claim 3
Dependent Claim
26 words
The capsule according to claim 1 on which said means to displace said cap farther onto said body comprises complementary threads on said cap and body.
Claim 4
Dependent Claim
39 words
The capsule according to claim 1 in which said piston in said one end of said container body also forms a closure therefor to prevent loss of the ingredient in the body of the capsule from said one end.
Claim 5
Dependent Claim
42 words
The capsule according to claim 1 further characterized by said frangible container comprising a pillow having a pair of opposite rupturable walls and the edges of said walls being sealed together to enclose said second ingredient therein, said second ingredient being liquid.
Claim 6
Dependent Claim
45 words
The capsule according to claim 4 in which one wall of said pillow is oriented toward said perforated wall of the body and disposed thereagainst, said one wall of the pillow being weaker and therefore more readily subject to rupture than the opposite wall thereof.
Claim 7
Dependent Claim
45 words
The capsule according to claim 4 in which one wall of the pillow is oriented toward said perforated wall and disposed thereagainst, said one wall of the pillow being thinner than the opposite wall of said pillow to render it more readily subject to rupture.
References Cited (Backward Citations)
US2404316A
Cited
US3144966A
Cited
US3415360A
Cited
US3425598A
Cited
US3655035A
Cited
US3521745A
Cited
US3655037A
Cited
US3537605A
Cited
US3739947A
Cited
US3595439A
Cited
US3684136A
Cited
US3802604A
Cited
US3907106A
Cited
US3819091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |