Light actuated remote control security system

dc.contributor.author Klaus, Jack
dc.contributor.author Schroeder, Larry
dc.contributor.author Casteel, Vincent
dc.contributor.author Schwartz, Kenneth
dc.contributor.department Iowa State University Research Foundation, Inc.
dc.date 2018-02-13T11:07:30.000
dc.date.accessioned 2020-06-30T06:15:59Z
dc.date.available 2020-06-30T06:15:59Z
dc.date.embargo 2013-05-21
dc.date.issued 1983-10-25
dc.description.abstract <p>A remote control security apparatus includes a lock element movable between locked and unlocked positions by an electrically actuated power device. The operator is provided with a portable transmitter adapted to generate light which is interrupted at a predetermined frequency so as to produce an encoded light signal. This signal is detected by a light transceiver which generates an independent signal at the same predetermined frequency and which compares the frequencies of the detected signal and independent signal. If these frequencies are substantially the same, the transceiver actuates the power means to move the lock element to its unlocked position. The security apparatus may be advantageously installed as a door lock, in which case a lock element receiving member is secured to the door. The signal detector is positioned at the exterior side of the door for receiving encoded signals from the transmitter and an override switch may be positioned at an interior side of the door for opening the lock without a transmitter. A contact switch is disclosed which maintains the lock element in the unlocked position whenever the door is open.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/patents/33/
dc.identifier.articleid 1039
dc.identifier.contextkey 4160217
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath patents/33
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/56712
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/patents/33/US4412356.pdf|||Fri Jan 14 23:37:20 UTC 2022
dc.subject.disciplines Civil Engineering
dc.subject.disciplines Electrical and Computer Engineering
dc.subject.disciplines Mechanical Engineering
dc.subject.keywords Civil Construction and Environmental Engineering
dc.subject.keywords Mechanical Engineering
dc.subject.keywords Electrical and Computer Engineering
dc.title Light actuated remote control security system
dc.type article
dc.type.genre patent
dspace.entity.type Publication
relation.isOrgUnitOfPublication 0b21e0ba-edf0-4137-9d16-53da01b11c6e
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