http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3742722-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a7d8cbb47e15f867a05e8ff2d0074207 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F25B41-335 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F25B41-06 |
| filingDate | 1972-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1973-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a93e5badbd2ac6e2deff294ac7e34ac3 |
| publicationDate | 1973-07-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3742722-A |
| titleOfInvention | Thermostatic expansion valve for refrigeration systems |
| abstract | A thermostatic expansion valve for a refrigeration system including a piston movable in a cylindrical chamber formed in the valve body, a first plastic seal carried by the piston and slidably yet sealably engaging the chamber wall, a second plastic seal carried by the piston and selectively engaging a valve seat to close the valve port, the piston having opposed first and second pressure surfaces, the first pressure surface being defined by the valve port and subjected to the pressure in the valve passage at one side of the valve port tending to move the piston toward the open position, and means subjecting the second pressure surface to the same pressure exerted on the first pressure surface and tending to urge the piston toward the closed position. The piston is provided with a nose, constituting at least a part of the first pressure surface, which extends beyond the second plastic seal and through the valve port, the nose being selectively shaped and contoured to vary the nominal capacity of the valve. The piston nose is detachably connected to the piston so that noses of different shapes and contours can be selectively attached to change such nominal valve capacity. The piston assembly includes adjacent first and second piston bodies, the first plastic seal being located against one end of the first piston body, and the second plastic seal being sandwiched between the other end of the first piston body and the second piston body, and the nose being provided with a threaded shank threadedly engaging the first and second piston bodies to clamp the piston bodies and seals together. A push rod extends through a body bore and operatively interconnects a flexible motor element with the valve means for moving the valve means. The body includes a guide portion through which the rod bore extends, the guide portion extending into the valve passage and spaced from the valve means, and being provided with an annular edge about the body bore and push rod. A seal collar of plastic material is slidably yet sealably mounted with a close fit on the push rod between the guide portion and the valve means. A spring about the push rod urges the seal collar against the annular edge to seal the clearance of the body bore between the push rod and the guide portion. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6568656-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4852364-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5209401-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113623903-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104344611-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104344611-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5177972-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004129008-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4236669-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110296259-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4362027-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110296259-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010204838-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6848624-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5228727-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6418741-B1 |
| priorityDate | 1972-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.