Patent US753740A successfully refreshed from Google Patents.
Patent US4775003A successfully refreshed from Google Patents.
US4775003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laboratory materials and apparatus support and laminar flow thermal transfer device
Assignee: Individual
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Filing: 1987-03-27
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Granted: 1988-10-04
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Expires: 2007-03-27
Abstract
Abstract A heat transfer device particularly adapted to cool electrophoresis gels and apparatus and comprising a supporting structure and a flat plate spaced above the supporting structure by a peripheral gasket to support the plate. The flat plate, gasket and supporting structure form a shallow enclosed chamber. A pair of longitudinal apertures adjacent opposite ends of the chamber provide communication with a pair of reservoirs in the supporting structure. A pump communicates with the downstream reservoir to draw coolant fluid through the chamber at a rate of flow providing laminar flow in the fluid and drawing the flat plate and gasket tight to the supporting structure.
Inventors
- 👤 John K. Koh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:02
CPC Classifications
B; B01; B01L; B01L7/00; G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/447; G01N27/44704; G01N27/44708
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
183 words
A laboratory materials and apparatus support and laminar flow thermal transfer device comprising, a supporting structure having a rectangular flat upper surface, a flat plate for supporting laboratory materials and apparatus, said flat plate spaced above and parallel to the flat upper surface, a peripheral gasket supporting the flat plate above the flat upper surface to form an enclosed chamber therebetween, a pair of longitudinal apertures opening into the chamber adjacent opposite ends thereof and extending substantially across the ends, said apertures each communicating with fluid reservoirs, one being an upstream reservoir and the other being a downstream reservoir, means to nominally retain the flat plate to the gasket and supporting structure, means to supply a substantially incompressible fluid to the upstream reservoir and means to forcefully draw said fluid from the downstream reservoir at a flow rate limited to provide laminar fluid flow substantially throughout the chamber and a static pressure within the chamber less than the pressure outside the flat plate thereby drawing the flat plate tightly to the gasket and supporting structure to prevent leakage of fluid by the gasket.
Claim 2
Dependent Claim
183 words
A laboratory materials and apparatus support and laminar flow thermal transfer device comprising, a supporting structure having a rectangular flat upper surface, a flat plate for supporting laboratory materials and apparatus, said flat plate spaced above and parallel to the flat upper surface, a peripheral gasket supporting the flat plate above the flat upper surface to form an enclosed chamber therebetween, a pair of longitudinal apertures opening into the chamber adjacent opposite ends thereof and extending substantially across the ends, said apertures each communicating with fluid reservoirs, one being an upstream reservoir and the other being a downstream reservoir, means to nominally retain the flat plate to the gasket and supporting structure, means to supply a substantially incompressible fluid to the upstream reservoir and means to forcefully draw said fluid from the downstream reservoir at a flow rate limited to provide laminar fluid flow substantially throughout the chamber and a static pressure within the chamber less than the pressure outside the flat plate thereby drawing the flat plate tightly to the gasket and supporting structure to prevent leakage of fluid by the gasket.
Claim 3
Dependent Claim
30 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 1 wherein the means to forcefully draw the fluid from the downstream reservoir comprises a pump.
Claim 4
Dependent Claim
26 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 1 wherein at least one reservoir is located within the supporting structure.
Claim 5
Dependent Claim
36 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 1 wherein the distance between the flat upper surface and the flat plate is approximately 60 mils and the fluid is water.
Claim 6
Dependent Claim
36 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 1 wherein the distance between the flat upper surface and the flat plate is 60 mils and the flat plate is glass.
Claim 7
Dependent Claim
37 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 1 wherein the rectangular area of the flat upper surface is from three square inches to two hundred sixteen square inches in extent.
Claim 8
Dependent Claim
46 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 1 wherein the fluid pressure within the entire chamber is less than the atmospheric pressure outside the chamber to thereby draw the flat plate tightly down upon the gasket and supporting structure.
Claim 9
Dependent Claim
182 words
A laboratory materials and apparatus support and laminar flow thermal transfer device comprising, a supporting structure having a flat upper surface forming the bottom of a fluid chamber, a plate for supporting laboratory materials and apparatus, said flat plate spaced above the supporting surface and having a flat lower surface forming the top of said fluid chamber, a peripheral gasket supporting the plate on the supporting structure and enclosing the chamber about the chamber periphery, a pair of longitudinal apertures forming inlet and outlet ports to the chamber and located adjacent the chamber periphery at opposite extremes of the chamber, and inlet and outlet reservoirs in communication with the inlet and outlet ports respectively, said plate and supporting structure so spaced as to provide laminar flow in a substantially incompressible fluid drawn through said chamber by means downstream in communication with the outlet reservoir thereby causing the static pressure within the chamber to be less than the atmospheric pressure on the plate and thereby drawing the plate tightly to the gasket and supporting structure to prevent leakage of fluid by the gasket.
Claim 10
Dependent Claim
182 words
A laboratory materials and apparatus support and laminar flow thermal transfer device comprising, a supporting structure having a flat upper surface forming the bottom of a fluid chamber, a plate for supporting laboratory materials and apparatus, said flat plate spaced above the supporting surface and having a flat lower surface forming the top of said fluid chamber, a peripheral gasket supporting the plate on the supporting structure and enclosing the chamber about the chamber periphery, a pair of longitudinal apertures forming inlet and outlet ports to the chamber and located adjacent the chamber periphery at opposite extremes of the chamber, and inlet and outlet reservoirs in communication with the inlet and outlet ports respectively, said plate and supporting structure so spaced as to provide laminar flow in a substantially incompressible fluid drawn through said chamber by means downstream in communication with the outlet reservoir thereby causing the static pressure within the chamber to be less than the atmospheric pressure on the plate and thereby drawing the plate tightly to the gasket and supporting structure to prevent leakage of fluid by the gasket.
Claim 11
Dependent Claim
26 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 8 including nominal means to retain the plate to the supporting structure.
Claim 12
Dependent Claim
28 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 8 wherein the downstream means comprises a pump drawing fluid from the downstream reservoir.
Claim 13
Dependent Claim
26 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 8 wherein at least one reservoir is located within the supporting structure.
Claim 14
Dependent Claim
29 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 8 wherein the distance between the bottom and top chamber surfaces is approximately 60 mils.
Claim 15
Dependent Claim
25 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 12 wherein the plate is glass and the fluid is water.
Claim 16
Dependent Claim
33 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 8 wherein the area of either chamber surface is from three square inches to two hundred sixteen square inches.
Claim 17
Dependent Claim
29 words
The laboratory materials and apparatus support and laminar flow thermal transfer device of claim 8 wherein the fluid is cooled below ambient temperature to cool an electrophoresis gel plate.
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) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |