http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-835039-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c70618d2ccb791af003f29dd15c7c400 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-7832 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-2036 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T137-7835 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A62B9-022 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B63C11-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B63C11-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A62B9-02 |
| filingDate | 1956-11-29^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1960-05-18^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-835039-A |
| titleOfInvention | Improvements in pressure regulators for breathing apparatus |
| abstract | 835,039. Underwater breathing apparatus. SPIROTECHNIQUE. Nov. 29, 1956 [Dec. 2, 1955], No. 36515/56. Class 81 (2). [Also in Group XXIX] The diaphragm 2, Fig. 5, of a diver's breathing apparatus experiences a downward thrust due to both water pressure and a weight p, the latter applying a thrust equal to a column of water having a height corresponding to the distance between the centres of thrust of the diaphragm 2 and the diver's lungs; the underside of the diaphragm 2 communicates with the diver's respiratory tracts via a duct 6, and with a source of pressure air through a valve 4. At the outlet of the exhaling duct 9 is a valve 8 consisting of a thin elastic disc which is fixed to a rigid valve 10 by a rod 11. During inhalation the pressure beneath the diaphragm 2 is lowered and the diaphragm moves downwardly to open the valve 4 through levers 5; the two valves 8-10 opening in opposite directions to prevent leakage. Upon exhalation the diaphragm 2 is lifted, since its area is greater than that of the valve 10, and the weight p lifts the rod 11 against the flexibility of the valve 8 to open valve 10, the difference in pressures on both sides of the valve 8 then causing it to open to place the duct 9 in communication with the water space above the diaphragm 2. In a modification, the weight is slidable on a rod secured to the diaphragm so that it does not act on the diaphragm when the apparatus is inverted although in this position it does mechanically open the rigid valve. In another modification, the disc valves are replaced by a single valve 14, Fig. 7, locked into closed position by a spring-loaded lever 15 and opened upon exhalation by the weight p acting on the lever in opposition to its spring 17 and unlocking the valve which then automatically opens. |
| priorityDate | 1955-12-02^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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