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Longsworth
Ralph Longsworth, Allentown, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20090173083 | CO-AXIAL MULTI-STAGE PULSE TUBE FOR HELIUM RECONDENSATION - A two-stage pulse tube refrigerator having a compact design, low vibration and low heat loss is provided where at least the 2 | 07-09-2009 |
| 20100011784 | CRYOPUMP LOUVER EXTENSION - A standard size cryopump adapted to be mounted behind a nonstandard gate valve by extending the inlet array to a larger diameter. A standard size cryopump adapted to be mounted behind a nonstandard gate valve by using an extension attached to flanges, where the flanges correspond to the diameter of the nonstandard gate valve. | 01-21-2010 |
| 20110107790 | Air Cooled Helium Compressor - This invention relates generally to oil lubricated helium compressor units for use in cryogenic refrigeration systems, operating on the Gifford McMahon (GM) cycle. The objective of this invention is to keep the oil separator and absorber, which are components in an oil lubricated, helium compressor, in an indoor air conditioned environment while rejecting at least 65% of the heat from the compressor outdoors during the summer. The balance of the heat is rejected to either the indoor air conditioned air, or cooling water. This is accomplished by circulating hot oil at high pressure to an outdoor air cooled heat exchanger and returning cooled oil to the compressor inlet, while hot high pressure helium is cooled in an air or water cooled heat exchanger in an indoor assembly that includes the compressor, an oil separator, an oil absorber, and other piping and control components. It is an option to reject the heat from the oil to the indoor space during the winter to save on the cost of heating the indoor space. | 05-12-2011 |
Ralph C. Longsworth, Allentown, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20090151803 | HYBRID SPOOL VALVE FOR MULTI-PORT PULSE TUBE - The problems of reducing the torque required to turn the valve, eliminating wear dust, and extending the life of the valves in Gifford McMahon (G-M) type multi-port pulse tube refrigerators are solved by using a rotary spool valve having radial clearance to control flow to and from the regenerator, and using face seal ports on the end of the spool to control flow to and from the pulse tubes. | 06-18-2009 |
Relph C. Longsworth, Allentown, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20110030392 | EXPANDER SPEED CONTROL - Apparatus and method for controlling the speed for a GM type expander includes relays that interrupt power when the current in the line is zero. The speed controller apparatus limits the maximum speed providing the expander with sufficient gas to meet its cooling requirements. | 02-10-2011 |
Serene H. Longsworth, Randolph, NJ US
| Patent application number | Description | Published |
|---|---|---|
| 20100179549 | IMPLANT FOR FRACTURE TREATMENT - An implant is described for fracture treatment, comprising an elongate and in particular substantially rotationally symmetrical base body ( | 07-15-2010 |