Abstract: A refrigerator door supporting structure having middle and lower hinges fixed at a case, the structure comprising a fixation bracket disposed at a top door; a position fixation unit for coupling one end of the hinge plate to the fixation bracket; and a compression unit for pressing and fixing the hinge plate and, at the same time, for releasing the hinge plate from the fixation bracket when the pressing force is removed, thereby improving job efficiency in assembly of the refrigerator door and improving conveniences in moving a large refrigerator through a narrow gate.

Abstract: An arrangement for precisely mounting a door on a vehicle body by a door on-door off hinge assembly. A door hinge flange has upper and lower transversely elongated slots and an intermediate rectangular tab opening symmetrically disposed on a common vertical axis. A tapping plate has a base formed with upper and lower bores and a central hook-like resilient tab member lanced-out from its base. The base mating face has a thermosetting film adhesive affixed thereto while an upper tapered locator pin extends therefrom adapted to pass through a door hinge flange clearance aperture and seat in a net hole in the door hinge web to establish a precise re-mounting location of the door hinge. Upon the tapping plate being hung on the flange inner surface, by virtue of the tab member being hooked through the flange tab opening, the locating pin extends through a clearance aperture in the door flange and a net hole in the base.

Abstract: A pre-assembled, spring loaded, block and tackle window sash balance assembly is adapted for providing vertical support for a window sash running in an elongated, generally upright sash run having a generally C-shaped guide channel extending along its plow region. The assembly comprises a generally U-shaped housing for a block and tackle spring balance device. The assembly further includes spaced slide means which are discrete from the housing itself and which are slidably interengageable with the guide channel for removeably attaching the assembly to the sash run. Accordingly, the block and tackle balance assembly may be pre-assembled and then conveniently and efficiently attached to the sash run and supported in a position to provide spring balanced support for a window sash mounted in the sash run.

Abstract: A self-contained heavy duty constant force sliding sash counterbalance assembly embodying a stacked plurality of coil springs each having a uniform coiling and recoiling force throughout all of the various coils irrespective of the individual coil spring positions of extension or contraction, wherein the counterbalance assembly structure is provided with an elongated U-shaped housing adapted to adjustably accommodate the addition or removal of individual spring elements as necessary in order to achieve the proper counterbalance effect for the weight of the particular sash to be supported so that over the raising and lowering range of that sash to which the counterbalance assembly is affixed, and at all adjustably set sash opening elevations and corresponding coil spring positions of extension and contraction therebetween, there is a substantially constantly uniform counterbalance force effect exerted on the sash.

Abstract: A compound counterbalance system for window sashes and the like, comprising: a biasing spring for easing operation of a window sash and the like, the biasing spring being movable at an inherently variable rate of force; a first biasing force transmission having a fixed rate of movement transmission part connected to the biasing spring and a variable rate of movement transmission part connected to the window sash and the like, the variable rate of movement transmission part having a variable rate of operation predetermined to automatically compensate for the variability of the biasing spring to provide substantial constancy of the biasing force throughout an operating range; and, a cable for interconnecting the biasing spring, the first biasing force transmission, and the window sash and the like, whereby loading forces on the first biasing force transmission are substantially constant throughout the operating range.