Patent US2732468A successfully refreshed from Google Patents.
Patent US3828434A successfully refreshed from Google Patents.
US3828434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixing capsule
Assignee: Individual
•
Filing: 1970-01-27
•
Granted: 1974-08-13
•
Expires: 1990-01-27
Abstract
Abstract A capsule for dental amalgam is provided with an internal piston for dispensing amalgam and is provided with means for attaching the capsule to a delivery means for advancing the piston; the other end may have a break-off closure.
Inventors
- 👤 W Mosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:22
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00593; A; A61; A61C; A61C5/00; A61C5/60; A61C5/62; A61C5/66; B05C17/00503; B05C17/00516
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
In capsule means for mixing and dispensing a toothfiller consisting of at least two substances, the combination comprising an elongated integral combined mixing and dispensing capsule means of tubular form, having an inner mixing chamber provided with a removable end, means for enabling dosed quantities of each of said substances to be introduced into said capsule means, a vibratory mixing device having means for connection with said capsule means to mix said substances in the mixing chamber of said combined mixing and dispensing capsule means thereby to form the tooth-filler, said capsule means also being provided with means for cooperation with a delivery means for enabling the tooth-filler to be introduced from said capsule means directly into the cavity of a tooth, whereby said substances can be introduced into said capsule means, be mixed therein, and be dispensed therefrom by said delivery means from one end of said mixing chamber directly into the cavity of the tooth.
Claim 2
Dependent Claim
157 words
In capsule means for mixing and dispensing a toothfiller consisting of at least two substances, the combination comprising an elongated integral combined mixing and dispensing capsule means of tubular form, having an inner mixing chamber provided with a removable end, means for enabling dosed quantities of each of said substances to be introduced into said capsule means, a vibratory mixing device having means for connection with said capsule means to mix said substances in the mixing chamber of said combined mixing and dispensing capsule means thereby to form the tooth-filler, said capsule means also being provided with means for cooperation with a delivery means for enabling the tooth-filler to be introduced from said capsule means directly into the cavity of a tooth, whereby said substances can be introduced into said capsule means, be mixed therein, and be dispensed therefrom by said delivery means from one end of said mixing chamber directly into the cavity of the tooth.
Claim 3
Dependent Claim
23 words
The invention defined in claim 1, wherein the other end of said capsule is provided with means for attachment to said delivery means.
Claim 4
Dependent Claim
23 words
The invention defined in claim 1, wherein the inside diameter of said capsule may vary between the limits of 1 and 4 mm.
Claim 5
Dependent Claim
29 words
The invention defined in claim 1, wherein said removable closure is defined by a weakened area to permit a closed end portion of the capsule to be broken off.
Claim 6
Dependent Claim
29 words
The invention defined in claim 2, wherein said capsule means is provided with a closure means comprising a piston means movable by said delivery means to dispense said substances.
Claim 7
Dependent Claim
60 words
The invention defined in claim 1, wherein said capsule means comprises an elongated tube open at both ends, and closure means for one of said open ends comprising a slidable piston retained within the tube, said tube also being provided with means for connection with delivery means for moving the piston to dispense said substances from the other open end.
Claim 8
Dependent Claim
38 words
The invention defined in claim 6, wherein the inside diameter of said tube is reduced at said one end and said piston is made of resilient material whereby the piston is retained under compression at said one end.
Claim 9
Dependent Claim
25 words
The invention defined in claim 6, wherein the open dispensing end of the tube is angularly curved with respect to the remainder of the tube.
Claim 10
Dependent Claim
19 words
The invention defined in claim 6, wherein said elongated tube and delivery means are joined as an integral unit.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |