Patent US20040127981A1 successfully refreshed from Google Patents.
US3868218A
Expired / Lapsed
US
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Methods and devices for automatically activating a chemical process at a given temperature
Assignee: Food Control AB
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Filing: 1972-02-17
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Granted: 1975-02-25
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Expires: 1992-02-17
Abstract
Abstract A method and a device for automatically activating a chemical process at a given temperature, said method and device being characterized in that the substances participating in the process are kept separate prior to activation by separating means which are caused, by means of an activator which at the activation temperature undergoes a change of phase associated with a change in volume, to rupture or change their shape during activation so that the substances participating in the process are bought into contact with one another.
Inventors
- 👤 Sven Ivan Arvid Tornmarck
- 👤 Per Olof Andersson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:43
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/0053; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/0015; B01J2219/00155
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
80 words
A METHOD OF AUTOMATICALLY COMBING CHEMICAL SUBSTANCES AT A GIVEN TEMPERATURE, ONE SAID SUBSTANCES BEING DISPOSED IN A FIRST CONTAINER AND THE OTHER BEING DISPOSED OUTSIDE OF SAID CONTAINER SO THAT SAID SUBSTANCES ARE SEPARATED BY A FRAGILE WALL OF SAID CONTAINER, COMPRISING THE STEPS OF PROVIDING AN ACTIVATOR OF A DIFFERENT SUBSTANCE THAN SAID TWO SUBSTANCES WHICH AT SAID GIVEN TEMPERATURE UNDERGOES A PHASE TRANSITION THEREBY INCREASING ITS VOLUME, WHICH ACTIVATOR IS ENCAPSULATED IN A SECOND CONTAINER LOCATED IN
Claim 2
Independent Claim
80 words
A METHOD OF AUTOMATICALLY COMBING CHEMICAL SUBSTANCES AT A GIVEN TEMPERATURE, ONE SAID SUBSTANCES BEING DISPOSED IN A FIRST CONTAINER AND THE OTHER BEING DISPOSED OUTSIDE OF SAID CONTAINER SO THAT SAID SUBSTANCES ARE SEPARATED BY A FRAGILE WALL OF SAID CONTAINER, COMPRISING THE STEPS OF PROVIDING AN ACTIVATOR OF A DIFFERENT SUBSTANCE THAN SAID TWO SUBSTANCES WHICH AT SAID GIVEN TEMPERATURE UNDERGOES A PHASE TRANSITION THEREBY INCREASING ITS VOLUME, WHICH ACTIVATOR IS ENCAPSULATED IN A SECOND CONTAINER LOCATED IN
Claim 3
Independent Claim
102 words
A device for automatically combining chemical substances at a given temperature comprising separating means for keeping such substances separate from each other before said given temperature is reached, said separating means including both an activator consisting of an activator medium encapsulated in an at least partly elastic container and a rupturable container in contact with said activator, said activator medium undergoing a phase transition when said given temperature is reached, said activator thereby changing its volume and rupturing said rupturable container so that communication between said substances is established, said elastic container being sufficiently elastic to remain intact at said volume change.
Claim 4
Independent Claim
102 words
A device for automatically combining chemical substances at a given temperature comprising separating means for keeping such substances separate from each other before said given temperature is reached, said separating means including both an activator consisting of an activator medium encapsulated in an at least partly elastic container and a rupturable container in contact with said activator, said activator medium undergoing a phase transition when said given temperature is reached, said activator thereby changing its volume and rupturing said rupturable container so that communication between said substances is established, said elastic container being sufficiently elastic to remain intact at said volume change.
Claim 5
Independent Claim
115 words
A device for automatically combining two chemical substances at a given temperature comprising, a first container which encloses one of said substances, said container having a fragile wall and the second of saiD substances being disposed outside of said wall, a second container located in proximity to said wall of said first container and containing an activator of a different substance than said two substances which changes its phase thereby increasing its volume at said given temperature, said second container being at least partly elastic so as to be expandible without breaking, whereupon when said given temperature is reached said second container expands and breaks said wall thereby establishing immediate communication between said two substances.
Claim 6
Independent Claim
115 words
A device for automatically combining two chemical substances at a given temperature comprising, a first container which encloses one of said substances, said container having a fragile wall and the second of saiD substances being disposed outside of said wall, a second container located in proximity to said wall of said first container and containing an activator of a different substance than said two substances which changes its phase thereby increasing its volume at said given temperature, said second container being at least partly elastic so as to be expandible without breaking, whereupon when said given temperature is reached said second container expands and breaks said wall thereby establishing immediate communication between said two substances.
Claim 7
Dependent Claim
27 words
A device as claimed in claim 3 wherein said first container is a horseshoe-shaped container and said second container is disposed between the legs of said horseshoe.
Claim 8
Dependent Claim
31 words
A device as claimed in claim 3 characterized in that said activator is solid at said given temperature while it is liquid at temperatures at least immediately above said given temperature.
Claim 9
Dependent Claim
14 words
A device as claimed in claim 1 characterized in that said activator is water.
Claim 10
Dependent Claim
20 words
A device as claimed in claim 6 characterized in that a freezing point-reducing agent has been added to the water.
Claim 11
Dependent Claim
18 words
A device as claimed in claim 3 wherein said second container is disposed inside of said first container.
Claim 12
Dependent Claim
15 words
A device as claimed in claim 8 wherein the shapes of said containers are identical.
Claim 13
Dependent Claim
12 words
A device as claimed in claim 9 wherein said containers are cylindrical.
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) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |