US3801467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for providing temperature gradients
Assignee: Tokyo Kagaku Sangyo KK
•
Filing: 1970-12-09
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Granted: 1974-04-02
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Expires: 1990-12-09
Abstract
Abstract Apparatus for providing temperature-gradients, incorporating a block of thermally-conductive material provided with a heating source at one end and a cooling source at the other end, and adapted to subject a group of like specimens to different temperatures.
Inventors
- 👤 A Nobe
- 👤 T Nakae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:37
CPC Classifications
B; B01; B01L; B01L7/00; B01L7/54; H; H05; H05B; H05B3/00; Y; Y10; Y10S; Y10S435/00; Y10S435/809
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
11 words
means for mounting said thermally-conductive receptacle member at opposite ends thereof;
Claim 2
Dependent Claim
19 words
Apparatus according to claim 1 wherein said thermally-conductive receptacle members is rotatably mounted at said first and second ends.
Claim 3
Dependent Claim
27 words
means for circulating cooling fluid through said chamber by means of said inlet and outlet ports and for maintaining said cooling fluid at a predetermined low temperature.
Claim 4
Dependent Claim
12 words
a tank of water in which said block extension is submerged; and
Claim 5
Dependent Claim
12 words
means for maintaining said tank of water at a predetermined low temperature.
Claim 6
Dependent Claim
20 words
Apparatus according to claim 2 further comprising means for imparting a predetermined type of motion to said thermally-conductive receptacle member.
Claim 7
Dependent Claim
12 words
heater means positioned at said first end of said thermally-conductive receptacle member;
Claim 8
Dependent Claim
43 words
cooling means positioned at said second end of said thermally-conductive receptacle member and operative in cooperation with said heater means to establish a variable, predetermined temperature gradient along the length of said receptacle member between said heater means and said cooling means; and
Claim 9
Dependent Claim
36 words
Apparatus according to claim 1 wherein said plurality of grooves extend from said first end to said second end to receive specimen material, and said plurality of grooves comprises at least two grooves of different dimensions.
Claim 10
Dependent Claim
26 words
Apparatus according to claim 1 wherein said plurality of bores extends from said first end to said second end to receive said tubes containing specimen material.
Claim 11
Dependent Claim
73 words
said member having receptacle means comprising a thermally-conductive block having a plurality of different openings therein for receiving a plurality of specimens in at least one testing environment for subjecting said plurality of specimens in said testing environment to said predetermined temperature, said openings comprising a plurality of bores for holding test tubes extending into a side of said block and a plurality of grooves extending into the top surface of said block.
Claim 12
Dependent Claim
25 words
Apparatus according to claim 1 wherein said heater means comprises at least one electric heater mounted in said first end of said thermally-conductive receptacle member.
Claim 13
Dependent Claim
31 words
Apparatus according to claim 1 further including a thermistor mounted in close proximity to said heater means and associated with monitoring circuitry operative to regulate the output of said heater means.
Claim 14
Dependent Claim
10 words
Apparatus according to claim 1 wherein said cooling means comprises:
Claim 15
Dependent Claim
10 words
Apparatus according to claim 1 wherein said cooling means comprises:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |