Sliding door system with optical detector for safe door opening and closing
First Claim
1. A sliding door system having a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost end of the vertical surfaces, a lower horizontal surface connecting lowermost ends of the vertical surfaces, and a door moving horizontally to open and close the opening, comprising:
- a first optical device having a light emitter for emitting light, a second optical device having a light detector for detecting the light, and a light reflector for reflecting the light emitted from the light emitter to the light detector, wherein the light reflector is positioned in at least one of the horizontally opposed vertical surfaces; and
the first and second optical devices are positioned in the upper horizontal surface.
1 Assignment
0 Petitions
Accused Products
Abstract
A sliding door system has a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost ends of the vertical surfaces, a lower horizontal surface connecting lowermost ends of the vertical surfaces, and a door moving horizontally to open and close the opening. The sliding door system also includes a first optical device having a light emitter for emitting light, a second optical device having a light detector for detecting the light, and a light reflector for reflecting the light emitted from the light emitter to the light receiver. The light reflector is positioned in at least one of the horizontally opposed vertical surfaces. The first and second optical devices are positioned in the upper horizontal surface.
56 Citations
17 Claims
-
1. A sliding door system having a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost end of the vertical surfaces, a lower horizontal surface connecting lowermost ends of the vertical surfaces, and a door moving horizontally to open and close the opening, comprising:
a first optical device having a light emitter for emitting light, a second optical device having a light detector for detecting the light, and a light reflector for reflecting the light emitted from the light emitter to the light detector, wherein the light reflector is positioned in at least one of the horizontally opposed vertical surfaces; and
the first and second optical devices are positioned in the upper horizontal surface. - View Dependent Claims (3, 6, 8, 10, 12, 14, 16)
-
2. A sliding door system having a pair of horizontally opposed vertical surfaces defining therebetween an opening, an upper horizontal surface connecting uppermost ends of the vertical surfaces, a lower horizontal surface connecting lowermost ends of the vertical surfaces, and a door moving horizontally to open and close the opening, comprising:
a first optical device having a light emitter for emitting light, a second optical device having a light detector for detecting the light, and a light reflector for reflecting the light emitted from the light emitter to the light detector, wherein the light reflector is positioned in at one of the horizontally opposed vertical surfaces;
one of the first and second optical devices is positioned in the upper horizontal surface; and
the other of the first and second optical devices is positioned in the other of the horizontally opposed vertical surfaces, opposing the light reflector. - View Dependent Claims (4, 5, 7, 9, 11, 13, 15, 17)
Specification