Hart & Cooley, Inc.

Roger P Engelke

Leon Lietch

A coupler for interconnecting a damper blade shaft having a keyed end with an actuator is provided whereby movement of the actuator is imparted to the damper blade shaft via the coupler. The coupler comprises a socket adapted to receive the keyed end of the damper blade shaft in at least two angular positions and a connector adapted to receive a portion of the actuator. The damper blade shaft can thereby be indexed to any one of the at least two positions relative to the actuator without additional fasteners when the keyed end of the damper blade shaft is received in the socket.

Indexed coupler for positioning a shaft in multiple angular positions

A retainer bracket for an electric heating assembly is provided with a pair of parallel and opposing side beams having longitudinal axes and at least one planar transverse support formed integral with the pair of side beams and extending between the pair of side beams. The transverse support preferably has a plurality of openings with longitudinal axes and the transverse support is disposed so that the axes of the openings are parallel to the longitudinal axes of the side beams. The plurality of openings are thereby each adapted to receive and retain an insulator without a separate fastener. A method of making the heating coil retainer bracket from a single web of material is also contemplated.

Heating coil retainer bracket and method for manufacturing the same

An open coil electric heater comprising a rigid support frame composed of a pair of longitudinally extending, laterally spaced members, with cross members between and secured to the longitudinal members. The cross members carry ceramic insulator members which are detachably connected to the cross members. Each insulator member has an end formed with a slot at an acute angle to the side walls of the insulator member to pass a portion of a convolution of an electrical wire coil. Hook-like projections form a transverse indentation at the base of the slot to detachably hold the portion of the wire om the insulator member. The portion of the wire is secured to the insulator members in an expeditious manner and without the use of tools by twisting the wire portion so that the wire portion is aligned sufficiently with the slot to enable the coil to freely pass into said slot. The coil then springs back to a transverse orientation so that the coil portion fits against opposite side faces of the transverse indentation and is held in position by the hook-like projections.

Growing community of inventors

Holland, MI, United States of America

Roger P Engelke