Abstract:
An apparatus for adjusting the force in a door operator or closer comprises an elongated housing and a spring therein connected to the door operator or closer. A spring collar is non-rotatable about the longitudinal axis of the housing and adapted to move linearly within the housing. A fixed adjusting screw extends along a longitudinal axis of the housing and the spring collar is slidable linearly along an outer surface of the adjusting screw. A nut is threadably engaged at a distal end of the adjusting screw and is rotatable about the longitudinal axis of the screw, the nut bearing on the spring collar during rotation. The spring collar bears on a distal end of the spring to vary the spring compression and thereby vary force applied by the door operator or closer. The housing has an opening in a sidewall through which the spring is visible, and the housing exterior surface includes markings indicating the degree of spring compression. An indicator is moveable along and visible from the exterior of the housing to indicate the compression of the spring.
Abstract:
An apparatus for adjusting the force in a door operator or closer comprises an elongated housing and a spring therein connected to the door operator or closer. A spring collar is non-rotatable about the longitudinal axis of the housing and adapted to move linearly within the housing. A fixed adjusting screw extends along a longitudinal axis of the housing and the spring collar is slidable linearly along an outer surface of the adjusting screw. A nut is threadably engaged at a distal end of the adjusting screw and is rotatable about the longitudinal axis of the screw, the nut bearing on the spring collar during rotation. The spring collar bears on a distal end of the spring to vary the spring compression and thereby vary force applied by the door operator or closer. The housing has an opening in a sidewall through which the spring is visible, and the housing exterior surface includes markings indicating the degree of spring compression. An indicator is moveable along and visible from the exterior of the housing to indicate the compression of the spring.
Abstract:
A door operator includes a door driver for opening and closing a door, and a control system including a microprocessor having multiple microprocessor inputs. The microprocessor is connected to and controls the door driver. The microprocessor has multiple program modules corresponding to input functions to be performed by the door operator. The door operator includes a plurality of door operator inputs connected to corresponding ones of the microprocessor inputs, and a user interface connected to the microprocessor. The user interface allows a user to associate a selected door operator input and corresponding microprocessor input to a selected program module corresponding to a selected function to be performed by the door operator.
Abstract:
A door closer, comprising a door closer housing mounted to one of a door frame or a door surface and a linkage arm for pivoting the door between open and closed positions. The linkage arm has a first and second end, the first end mounted to the other of the door frame or the door surface. The door closer includes a rotatable connector between the linkage arm and the door closer housing, the linkage arm second end engaging with the rotatable connector. The connector has a rotatable body portion and head protrusion substantially secured in a female receptor to transmit rotation about a longitudinal axis of the connector. One or both of the head protrusion or female receptor has a curved profile and is further movable with respect to the head protrusion to permit limited rotational misalignment of the linkage arm on any axis perpendicular to the connector longitudinal axis.