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US 5,996,383 AGranted
Lockset with motion detection and ambient light sensors
AssigneeEmhart Inc.
InventorsGerard G. Adelmeyer, Joseph J. Fata, Charles E. Babb
Life of this patent
Estimating the term…
Abstract
An electronic module which is located between the plug cover and the front flange of the cylinder body has light and motion sensors that look out through holes in the cover. Whenever it is dark and a person approaches the lockset a light will be turned on to illuminate a translucent ring that surrounds the keyway.
Claims13
A lockset comprising:
- a cylinder plug including a key receiving slot,
- a cover assembly for enclosing said cylinder plug, said cover assembly including
- a cover having a central opening and having first and second holes therein,
- a central translucent ring having a portion located within said central opening and having an outer annular surface, and
- an electronic module disposed beneath said cover assembly and selectively configured to matingly engage said outer annular surface of said translucent ring, said electronic module including
- light source means including an L.E.D. for radially directing light at the outer annular surface of said central translucent ring to illuminate said central translucent ring,
- a first sensor for sensing ambient light, said first sensor located in said first hole,
- a second sensor for sensing motion within a detection range, said second sensor located in said second hole, and
- an electronic circuit disposed within said electronic module and operable for illuminating said light source means when said first sensor senses ambient light below a predetermined level and said second sensor senses motion within the detection range, said electronic circuit including
- a first circuit responsive to an output of said first sensor and operable for switching said second sensor between a sleep mode when said ambient light is above said predetermined level and a standby mode when said ambient light is below said predetermined level,
- a second circuit responsive to an output of said second sensor generated when said second sensor is in said standby mode, and
- a third circuit responsive to said second circuit and operable for illuminating said L.E.D.
9 more elements
A lockset comprising
- a cylinder plug including a key receiving slot,
- a cover assembly for enclosing said cylinder plug including
- a cover having a central opening and a first hole and a second hole,
- a translucent ring having a portion located within said central opening between said cylinder plug and said cover,
- a cylinder body for receiving said cylinder plug, said cylinder body including a front flange, and
- a circuit module located between said front flange and said cover including
- a first sensor located in said first hole for sensing ambient light,
- a second sensor located in said second hole for sensing motion within a detection range,
- light source means located proximate said translucent ring to illuminate said ring, and
- said circuit module containing a first circuit responsive to an output of said first sensor and operable for switching said second sensor between a sleep mode when an ambient light condition is above a predetermined level and a standby mode when said ambient light condition is below said predetermined level, a second circuit responsive to an output of said second sensor generated when said second sensor is in said standby mode, and a third circuit responsive to said second circuit and operable for illuminating said light source means.
7 more elements
A self-contained illuminating lockset comprising:
- a cylinder assembly including a cylinder body and a cylinder plug;
- a cover having a central opening, a first hole and a second hole formed therein;
- a translucent ring having a portion located within said central opening adjacent said cylinder plug and an outer annular surface;
- an electronic module disposed beneath said cover and having an inner annular surface matingly engaging said outer annular surface of said translucent ring, said electronic module including:
- an L.E.D. disposed along said inner annular surface and operable to radially direct light toward said outer annular surface of said translucent ring for providing illumination thereof;
- a light sensor located in said first hole and operable to sense an ambient light condition;
- a motion sensor located in said second hole and operable to sense motion within a detection range;
- an activation circuit disposed within said electronic module and operably coupled to said first sensor and said second sensor for determining whether said ambient light condition is below a predetermined level and whether motion is detected within said detection range;
- and
- an illumination circuit disposed within said electronic module and operably coupled to said L.E.D. for illuminating said L.E.D. only when said ambient light condition is below said predetermined level and motion is detected within said detection range.
7 more elements
Dependencies are inferred from the claim text.