| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_71b4b4ae4afb729e798df98834716e6d |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A45D1-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G05D23-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H05B3-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G05D23-1906 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A45D1-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G05D23-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H05B3-50 |
| filingDate |
1991-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1993-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ddf311c1abe7427dbab810bc7ab7591e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_54f0b2e9cd7fdbee1465a230c4b99e92
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_24ce37ab4aea89d5d0b251b6ef8698b7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b8a74f509fc91f59f29347dcae4a589 |
| publicationDate |
1993-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5270520-A |
| titleOfInvention |
Hair styling appliances and heater control circuits therefor |
| abstract |
The invention is directed to a hair styling appliance having heat conductive portion for applying heat to the hair and an electrically energizable heater element located in thermal relationship with the heat conductive portion for causing it to be heated upon application of energy. A temperature sensor is located in thermal relationship with the heat conductive portion. The temperature sensor is electrically connected to the heater element and has a positive temperature coefficient of resistance. A pulse switching device is operatively coupled to the heater and responsively coupled to the temperature sensor for controlling energization of the heater with temperature. A selectable temperature setting circuit is coupled to the pulse switching device for varying energization of the heater in accordance with a selected temperature operation. In a particular embodiment, the temperature sensor has a characteristic in the form of a curve with a rate of resistance which gradually changes over the desired temperature range resulting in stable temperature control and fast recovery from thermal loads. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009211101-A1
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http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8319152-B2 |
| priorityDate |
1991-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |