Patent US3752158A successfully refreshed from Google Patents.
Patent US3794221A successfully refreshed from Google Patents.
US3794221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge for storing, mixing and dispensing a plurality of ingredients
Assignee: Inter Polymer Research Corp
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Filing: 1971-12-06
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Granted: 1974-02-26
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Expires: 1991-12-06
Abstract
Abstract A cartridge for storing separately a plurality of ingredients, at least one of them in a separate frangible envelope within the cartridge, and then for mixing the ingredients and expelling the mixture, includes a cylindrical container apertured at each end, a piston, a piston rod slidably passing through one end of the container and through the piston and having a substantially fluid tight seal with the piston and with the side walls of the container, a mixing element affixed to the rod on the side of the piston remote from that one end of the container, and means to couple the piston to the piston rod to permit drive of the piston lengthwise of the container by the piston rod after rupture of the envelope and mixture of the ingredients by the mixing element.
Inventors
- 👤 F Hostettler
- 👤 H Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:34
CPC Classifications
A; A43; A43D; A43D25/00; A43D25/18; B; B01; B01F; B01F35/00; B01F35/71; B01F35/713; B01F31/00; B01F31/44; B01F31/441; B01F33/00; B01F33/50; B01F33/501; B01F33/5011; B01F33/50112; B01F35/7131; B01F35/716; B01F35/7162; B01F35/30; B01F35/32; B01F35/32005; B01F35/3202
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
116 words
A cartridge comprising: a. a container having a substantially cylindrical side wall and an apertured end wall at each end thereof; b. a piston slidable within and lengthwise of the container; c. a piston rod slidably passing through said piston and through the aperture in one of said end walls, said piston having a substantially fluid-tight seal with said piston rod and with the side walls of the container; d. a mixing element affixed to said piston rod on the side of said piston remote from said one end wall; and, e. two-part interengaging means of which one part is arranged on said piston and of which the other part is arranged on said piston rod.
Claim 2
Dependent Claim
116 words
A cartridge comprising: a. a container having a substantially cylindrical side wall and an apertured end wall at each end thereof; b. a piston slidable within and lengthwise of the container; c. a piston rod slidably passing through said piston and through the aperture in one of said end walls, said piston having a substantially fluid-tight seal with said piston rod and with the side walls of the container; d. a mixing element affixed to said piston rod on the side of said piston remote from said one end wall; and, e. two-part interengaging means of which one part is arranged on said piston and of which the other part is arranged on said piston rod.
Claim 3
Dependent Claim
36 words
The cartridge of claim 1 wherein the mixing element is a disc of smaller diameter than the internal diameter of the container, said disc possessing one or more apertures for the free passage of ingredients therethrough.
Claim 4
Dependent Claim
32 words
The cartridge of claim 2 wherein the mixing element possesses one or more spikes on the side thereof facing the piston for facilitating rupture of a frangible envelope stored in the container.
Claim 5
Dependent Claim
49 words
The cartridge of claim 1 wherein said one end wall of the container possesses an axial extension of non-circular section and the side of the piston remote from the mixing element possesses an axial extension of non-circular section substantially fitting within the axial extension of said one end wall.
Claim 6
Dependent Claim
36 words
The cartridge of claim 1 wherein the two part interengaging means comprises a female thread on the piston and a male thread on the piston rod at the inner end thereof directly behind the mixing element.
Claim 7
Dependent Claim
31 words
The cartridge of claim 1 wherein the end wall remote from the end wall through which the piston rod passes possesses a nozzle fitted over the aperture of said end wall.
Claim 8
Dependent Claim
23 words
The cartridge of claim 1 wherein the end of the piston rod exterior to the cartridge chamber has a handle (24) affixed thereto.
Claim 9
Dependent Claim
8 words
The cartridge of claim 1 constructed of plastic.
Claim 10
Dependent Claim
132 words
A cartridge comprising: a. a container having a substantially cylindrical side wall and an apertured end wall at each end thereof; b. a piston slidable within and lengthwise of the container; c. a piston rod slidably passing through said piston and through the aperture in one of the said end walls, said piston having a substantially fluid-tight seal with said piston rod and with the side walls of the container; d. a mixing element affixed to said piston rod on the side of said piston remote from said one end wall; e. two-part interengaging means of which one part is arranged on said piston and of which the other part is arranged on said piston rod; and f. at least one frangible envelope within the container between said piston and mixing element.
Claim 11
Dependent Claim
132 words
A cartridge comprising: a. a container having a substantially cylindrical side wall and an apertured end wall at each end thereof; b. a piston slidable within and lengthwise of the container; c. a piston rod slidably passing through said piston and through the aperture in one of the said end walls, said piston having a substantially fluid-tight seal with said piston rod and with the side walls of the container; d. a mixing element affixed to said piston rod on the side of said piston remote from said one end wall; e. two-part interengaging means of which one part is arranged on said piston and of which the other part is arranged on said piston rod; and f. at least one frangible envelope within the container between said piston and mixing element.
Claim 12
Dependent Claim
142 words
A cartridge comprising: a. a container having a substantially cylindrical side wall and an apertured end wall at each end thereof; b. a piston slidable within and lengthwise of the container; c. a piston rod slidably passing through said piston and through the aperture in one of said end walls, said piston having a substantially fluid-tight seal with said piston rod and with the said side walls of the container; d. a mixing element affixed to said piston rod on the side of said piston rod remote from said one end wall; e. two-part interengaging means of which one part is a female thread on the piston and a male thread on the piston rod at the inner end thereof directly behind the mixing element; and g. means for substantially preventing rotation of the piston during disengagement of the piston rod therefrom.
Claim 13
Dependent Claim
142 words
A cartridge comprising: a. a container having a substantially cylindrical side wall and an apertured end wall at each end thereof; b. a piston slidable within and lengthwise of the container; c. a piston rod slidably passing through said piston and through the aperture in one of said end walls, said piston having a substantially fluid-tight seal with said piston rod and with the said side walls of the container; d. a mixing element affixed to said piston rod on the side of said piston rod remote from said one end wall; e. two-part interengaging means of which one part is a female thread on the piston and a male thread on the piston rod at the inner end thereof directly behind the mixing element; and g. means for substantially preventing rotation of the piston during disengagement of the piston rod therefrom.
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |