Abstract: A suspension mechanism for mounting a combustion chamber fan motor in a combustion powered hand tool including a flexible rubber web secured between a motor retaining ring and a cylinder head mounting bracket. The suspension mechanism is tuned for at least one of reducing the axial acceleration of the motor and dampening the oscillation of the motor relative to the tool. The web includes concentric grooves on its upper and lower surface and a number of bores on the upper surface to provide the requisite flexibility depending on the characteristics of the tool.

Abstract: A battery pack latching or locking mounting system comprises a battery case, a cell pack disposed within the battery case, a battery cap or end closure, and a spacer which is longitudinally interposed between the cell pack and the battery cap or end closure. A first latching element or detent is mounted upon the spacer, and a second latching element or detent is mounted upon the battery cap or end closure. When the battery pack is initially mounted within the tool housing socket, the first latching element or detent of the spacer lockingly engages the single aperture defined within a side wall portion of the tool housing socket so as to lock the battery pack at its first OFF position or state.

Abstract: An electrical outlet box used in tractor trailer combinations includes a plate having an opening therethrough to provide access to an electrical outlet. A cover is pivotally mounted to a shaft spaced from and mounted parallel to the plate. A first spring is mounted about the shaft. A second spring which can also be mounted on the shaft or permanently or removably secured against the plate has a section which is spaced from but which bears across the exterior surface of the cover when a plug is inserted within the outlet. The first spring acts to bias the interior surface of the cover against the plate to enclose the opening when the outlet is not in use while the second spring acts to bias the interior surface against the plug's cable so as to prevent the plug from falling out of the outlet when the outlet is in use.