초록 ▼

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 enc

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.

대표청구항 ▼

A remote control lock for a door having one side pivotally connected to one side portion of a door frame and an opposite free side closeable against an opposite side portion of the door frame, comprising, a lock housing supported on said opposite side portion of said door frame, a lock element suppo

A remote control lock for a door having one side pivotally connected to one side portion of a door frame and an opposite free side closeable against an opposite side portion of the door frame, comprising, a lock housing supported on said opposite side portion of said door frame, a lock element supported on said housing for movement between a locked position wherein said element is advanced into the path of said door and an unlocked position wherein said element is retracted clear of the path of said door, a lock element receiving member secured to said opposite free side of said door at a position for receiving said lock element in the locked position thereof when said door is closed, thereby to lock said door in the closed position, bias means urging said lock element to said locked position, an electrically actuated power means supported by said housing for moving said lock element to said unlocked position against the urging of said bias means, a portable transmitter adapted to generate light which is interrupted at a continuously oscillating predetermined frequency, a signal receiving circuit supported by said housing and including means for detecting said encoded light signal and verification means for determining whether said encoded light signal is interrupted generally at said predetermined frequency, said verification means being electrically connected to said power means and operative to actuate said power means to move said lock element to said unlocked position when the frequency of the detected light signal substantially equals said predetermined frequency, said signal receiving circuit further comprising an override switch which is manually operable to actuate said power means to retrace said lock element.