Automatic sliding door operator

Details Automatic sliding door operator Automatic sliding door operator

1984-10-30

1986-08-12

Sakran, Victor N.

Movable or removable closures

Condition responsive control

49 25, 49 30, 49370, E05F 1520

Patent

active

046048260

ABSTRACT:
A solid state integrated regulating circuitry for incorporation in the conventional control circuitry of automatic sliding door systems includes timing and processing circuits operative through plural inverters to deliver enabling and disenabling electrical signals to the control circuitry when the elapsed time between cycles of door opening and closing actuations are greater or less than a predetermined time respectively either to prematurely terminate or to have no altering effect upon door opening actuation, thereby to open the doors to a reduced width during low traffic conditions and to open the doors to a full width during high traffic conditions.

REFERENCES:
patent: 3626637 (1971-12-01), Rudicel
patent: 3742434 (1973-06-01), Leyde et al.
patent: 4009476 (1977-02-01), Lutz
patent: 4272921 (1981-06-01), Jorgensen
patent: 4338553 (1982-07-01), Scott, Jr.

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