Paul P Doherty

US Patent:

7434577, Oct 14, 2008

Filed:

Feb 28, 2006

Appl. No.:

11/364293

Inventors:

Paul M. Doherty - Stoughton MA, US

International Classification:

F24J 2/24

US Classification:

126651, 126572, 126585, 126663, 126675, 126652, 126628

Abstract:

This invention provides novel devices and methods for the heating of air with solar radiant energy. The devices of the present invention feature a housing partitioned into essentially isolated sections wherein the sections are in fluid communication with each other through a plurality of channels located within the partitions. The two unique features of the invention, essentially isolated sections and partitions comprising a plurality of channels, increase the temperature achieved by the solar heater by 1) creating multiple, sequential sections that function independently of each other providing a higher starting temperature in each section and, therefore, a higher final temperature, 2) providing second means of heating the air within the channels located within the partitions and, 3) by virtually eliminating the mixing of incoming cold air with the heated air of the solar air heater.

US Patent:

D660949, May 29, 2012

Filed:

Jan 13, 2010

Appl. No.:

29/348510

Inventors:

Paul Doherty - Stoughton MA, US

International Classification:

2303

US Classification:

D23342

US Patent:

39452158, Mar 23, 1976

Filed:

Feb 14, 1974

Appl. No.:

5/443140

Inventors:

Robert W. Johnson - Holbrook MA
Paul R. Doherty - Woburn MA

Assignee:

Cryogenic Technology, Inc. - Waltham MA

International Classification:

F17C 1702

US Classification:

62 55

Abstract:

A helium transfer line adapted to be constructed in extended lengths and to carry liquid helium and/or 4. 2. degree. K helium gas with minimum loss of refrigeration capacity due to heat leaks into and through the line. The transfer line, in its basic structure, comprises a fluid helium process line, radiation shielding, vacuum jacketing and a cryogenic coolant line in thermal contact with the radiation shielding and carrying a cryogenic coolant such as liquid nitrogen. Line components, comprising heat-stationed bayonets with or without LN. sub. 2 bypass lines, expansion/contraction joints, and flexible sections and, if desired, valves, ell-sections and tee-sections, are designed to be integrated into the basic structure so that this structure may be carried through essentially the entire length of the line. Various combinations of these components in the transfer line make it possible to adapt the transfer line to a wide range of requirements dictated by such factors as space, and the relative positions of the two or more points of connection, i. e. , a source of liquid helium and a refrigeration load to be cooled by the liquid helium.

US Patent:

40117324, Mar 15, 1977

Filed:

Feb 14, 1974

Appl. No.:

5/442326

Inventors:

Paul R. Doherty - Woburn MA
Robert W. Johnson - Holbrook MA

Assignee:

Helix Technology Incorporated - Waltham MA

International Classification:

F17C 702

US Classification:

62 55

Abstract:

A heat-stationed bayonet connector suitable for connecting liquid cryogen sources and refrigeration loads to a cryogenic fluid transfer line or for connecting components such as flexible sections, etc. , into the transfer line. The incorporation of a cold heat station in the bayonet connector and its thermal connection to a coolant makes it possible to intercept heat flow along the length of the bayonet and thereby to minimize heat losses associated with the connector. The use of a cryogenic coolant transfer line in the form of a flexible bypass connecting the male and female sections of the bayonet makes it possible to use the bayonet connector in a transfer line which incorporates a cooled radiation shield along essentially its entire length.