Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
144 words
An automatic door operator comprising a reversible drive including a drive motor for powering a door through a door opening and door closing cycle and a traffic responsive control therefor, said traffic responsive control comprising radiant energy emitter means for emitting a divergent beam of radiant energy spanning the path of travel of traffic through the door and radiant energy detector means spaced from said emitter and having an axis of sensitivity disposed transversely of said beam of radiant energy to intersect said beam and define in the intersection thereof a discrete divergent three-dimensional control zone for sensing diffuse reflected radiant energy from traffic within said three-dimensional control zone to control the actuation of said reversible drive, said three-dimensional control zone being spaced above and having a lower boundary substantially parallel to the floor along said path of travel of traffic through the door.
Claim 2
Dependent Claim
144 words
An automatic door operator comprising a reversible drive including a drive motor for powering a door through a door opening and door closing cycle and a traffic responsive control therefor, said traffic responsive control comprising radiant energy emitter means for emitting a divergent beam of radiant energy spanning the path of travel of traffic through the door and radiant energy detector means spaced from said emitter and having an axis of sensitivity disposed transversely of said beam of radiant energy to intersect said beam and define in the intersection thereof a discrete divergent three-dimensional control zone for sensing diffuse reflected radiant energy from traffic within said three-dimensional control zone to control the actuation of said reversible drive, said three-dimensional control zone being spaced above and having a lower boundary substantially parallel to the floor along said path of travel of traffic through the door.
Claim 3
Dependent Claim
26 words
The automatic door operator of claim 1 wherein such a fixed three-dimensional control zone is provided on both the entrance and exit sides of the door.
Claim 4
Dependent Claim
38 words
The automatic door operator of claim 2 wherein the three-dimensional control zone on the side of the door toward which the door swings is spaced closer to the floor than the three-dimensional control zone on the other side.
Claim 5
Dependent Claim
31 words
The automatic door operator of claim 1 wherein one of said emitter and detector means is located above the door and the other is located at the side of the door.
Claim 6
Dependent Claim
39 words
The automatic door operator of claim 4 wherein the door opens into the three-dimensional control zone and said one of said emitter and detector means located above the door is disposed substantially on the hinge line of the door.
Claim 7
Dependent Claim
31 words
The automatic door operator of claim 5 wherein the other of said emitter and detector means is located adjacent the jamb on the side of the door opposite the hinge line.
Claim 8
Dependent Claim
20 words
The automatic door operator of claim 6 wherein said emitter means is located on the hinge line of the door.
Claim 9
Dependent Claim
32 words
The automatic door operator of claim 1 wherein the output of the emitter means is coded and the detector means is sensitive only to the coded output of the associated emitter means.
Claim 10
Dependent Claim
57 words
The automatic door operator of claim 8 wherein one of said emitter and detector means is located adjacent the top of the door near the hinge line of the door and the other of said emitter and detector means is located adjacent the top of the door on the side of the door opposite the hinge line.