US5540062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled cryogenic contact system
Assignee: Rafael Armament Development Authority Ltd
•
Filing: 1994-02-14
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Granted: 1996-07-30
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Expires: 2014-02-14
Abstract
Abstract An apparatus for creating controlled temperature changes on a contact surface, comprises: a) a probe having a contact surface, which probe is suitable for creating fast temperature changes at the contact surface; b) temperature generation assembly, coupled to the probe, being capable of creating cryogenic and above 0° C. temperatures at the contact surface of the probe; and c) processing assembly to control the temperature generation assembly according to predetermined operating conditions.
Inventors
- 👤 Ben-Zion Maytal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:56
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; A; A61; A61B; A61B18/00; A61B18/02; A61B2018/00005; A61B2018/00041; A61B2018/00636; A61B2018/0231; A61B2018/0262; A61B2018/0268; A61B2018/0281; A61B2018/0287
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
148 words
Apparatus for creating controlled temperature changes on a contact surface, comprising: a) a probe having a contact surface, the probe comprising: 1) a heat exchanger coupled to an orifice, the orifice opening into a jacket; 2) the jacket which is in contact with the surface to be heated and cooled, the jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled; 3) two independent connections for pressurized gas sources, connected to the heat exchanger; b) temperature generation means, coupled to the probe, comprising; 1) two independent pressurized gas sources, connected to the probe through the two independent connections; 2) controllable gas flow valves to permit or preclude a flow of each of gases from the independent pressurized gas sources into the probe; and c) processing means for controlling the controllable gas flow rate valves according to predetermined operating conditions.
Claim 2
Dependent Claim
148 words
Apparatus for creating controlled temperature changes on a contact surface, comprising: a) a probe having a contact surface, the probe comprising: 1) a heat exchanger coupled to an orifice, the orifice opening into a jacket; 2) the jacket which is in contact with the surface to be heated and cooled, the jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled; 3) two independent connections for pressurized gas sources, connected to the heat exchanger; b) temperature generation means, coupled to the probe, comprising; 1) two independent pressurized gas sources, connected to the probe through the two independent connections; 2) controllable gas flow valves to permit or preclude a flow of each of gases from the independent pressurized gas sources into the probe; and c) processing means for controlling the controllable gas flow rate valves according to predetermined operating conditions.
Claim 3
Dependent Claim
136 words
Apparatus according to claim 1, comprising: a) a probe comprising: 1) heat exchanging means coupled to an orifice, the said orifice opening into a jacket; 2) a jacket which is in contact with the surface to be heated and cooled, the said jacket forming a reservoir capable of housing a fluid in contact with the surface to be heated and cooled; 3) two independent connections for pressurized gas sources, connected to the said heat exchanger; b) two independent pressurized gas sources, connected to the said probe through the said two independent connections; c) controllable gas flow valves to permit or preclude the flow of each of the gases from the said independent pressurized gas sources into the said probe; d) processing means to control the said controllable gas flow rate valves according to predetermined operating conditions.
Claim 4
Dependent Claim
18 words
Apparatus according to claim 1, further comprising data input means, to provide operation data to the processing means.
Claim 5
Dependent Claim
13 words
Apparatus according to claim 3, wherein the data input means comprise a keyboard.
Claim 6
Dependent Claim
20 words
Apparatus according to claim 4, further comprising display means to display data written to, or read from, the processing means.
Claim 7
Dependent Claim
14 words
Apparatus according to claim 3, wherein the data input means comprise a communication port.
Claim 8
Dependent Claim
13 words
Apparatus according to claim 6, wherein the communication port is an RS232 port.
Claim 9
Dependent Claim
20 words
Apparatus according to claim 3, wherein the data input means comprise magnetic or optical reading means, to read pre-prepared data.
Claim 10
Dependent Claim
26 words
Apparatus according to claim 8, further comprising temperature-reading means located at or near the contact surface, which temperature-reading means provide temperature readings to the processing means.
Claim 11
Dependent Claim
14 words
Apparatus according to claim 9, wherein the temperature-reading means comprise one or more thermocouples.
Claim 12
Dependent Claim
34 words
Apparatus according to claim 10, further comprising pressure-reading means located between the pressurized gas source and the probe, to provide to the processing means readings corresponding to pressure supplied bye each pressurized gas source.
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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) | 1999-07-30 | 2000-01-29 | 2000-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-30 | 2004-01-29 | 2004-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-30 | 2008-01-29 | 2008-07-30 | $7700.00 | Window Closed / Lapsed |