Patent US4688946A successfully refreshed from Google Patents.
US4688946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic mixing of liquid organic compounds
Assignee: Messer LLC
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Filing: 1984-11-07
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Granted: 1987-08-25
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Expires: 2004-11-07
Abstract
Abstract A method of automatically mixing predetermined quantities of liquid organic compound and liquid propellant is disclosed. A metering cylinder is filled from a storage reservoir of a liquid organic compound and then disconnected from the reservoir. Then one end of the metering cylinder is connected to a source of liquid propellant, the other end is connected to a mixing vessel, and vapour pressure of the liquid propellant is utilized to force all of the liquid organic compound into the mixing vessel, together with a predetermined volume of liquid propellant.
Inventors
- 👤 Sherif Latif
- 👤 Christopher S. Nieass
- 👤 Peter A. Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:07
CPC Classifications
B; B65; B65B; B65B31/00; B65B31/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
A method of automatically mixing predetermined quantities of liquid organic compound and liquid propellant, comprising the steps of: connecting a metering cylinder having two ends to a storage reservoir of a liquid organic compound; filling said metering cylinder with liquid organic compound by allowing liquid to flow from said reservoir into said metering cylinder; disconnecting the filled metering cylinder from said reservoir; thereafter connecting one end of said metering cylinder to a source of liquid propellant and connecting the other end of said metering cylinder to a mixing vessel; and utilizing the vapour pressure of the liquid propellant to force all of the liquid organic compound from said metering cylinder into said mixing vessel, together with a predetermined volume of liquid propellant.
Claim 2
Independent Claim
122 words
A method of automatically mixing predetermined quantities of liquid organic compound and liquid propellant, comprising the steps of: connecting a metering cylinder having two ends to a storage reservoir of a liquid organic compound; filling said metering cylinder with liquid organic compound by allowing liquid to flow from said reservoir into said metering cylinder; disconnecting the filled metering cylinder from said reservoir; thereafter connecting one end of said metering cylinder to a source of liquid propellant and connecting the other end of said metering cylinder to a mixing vessel; and utilizing the vapour pressure of the liquid propellant to force all of the liquid organic compound from said metering cylinder into said mixing vessel, together with a predetermined volume of liquid propellant.
Claim 3
Dependent Claim
14 words
The method according to claim 1, wherein the liquid propellant is liquid carbon dioxide.
Claim 4
Dependent Claim
14 words
The method according to claim 2, wherein the liquid organic compound is a pesticide.
Claim 5
Dependent Claim
23 words
The method according to claim 1, wherein the metering cylinder has top and bottom ends which are both connected to the storage reservoir.
Claim 6
Dependent Claim
31 words
The method according to claim 4, wherein both the top and bottom ends of the metering cylinder are connected at points below the surface of liquid organic compound in the reservoir.
Claim 7
Dependent Claim
14 words
The method according to claim 5, wherein the liquid propellant is liquid carbon dioxide.
Claim 8
Dependent Claim
14 words
The method according to claim 6, wherein the liquid organic compound is a pesticide.
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) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |