Abstract: A removable guiding apparatus, placed on a trailer hitch extension, that will force the tongue of a trailer over the trailer hitch ball. This system is designed such that the positioning components will force the trailer tongue into position over the hitch ball should the tongue and hitch ball be slightly out of alignment during the backing of the vehicle toward the trailer tongue. These positioning components can be easily placed upon and removed from a plate that is permanently attached to the underside of the trailer hitch extension and hitch ball. The ability to remove these positioning components allows for a wide swing of the trailer tongue during towing as well as unobstructed access to the hitch area.

Abstract: There is disclosed a camber-lock apparatus that provides for both joining and separating a two part hole saw. Said camber-lock apparatus consist of a circuited plate that installs within the boundaries of clasping devises at the top of a cylindrical saw blade. The cylindrical saw blade, with the cutting or teeth edge at the bottom, has a large opening at the top. Within the interior circumference of said opening is attached a series of clasping devices. Said circuited plate, with its attached arbor and pilot bit, comprises the top elements of the saw; which can be rotated into and out of place within the boundaries of said clasping devises. The purpose for removal of said circuited plate is to exposes the interior of the saw and any material jammed therein; thereby allowing for easy removal of said material.

Abstract: There is disclosed an automatic cleaning apparatus for a septic tank filter. The cleaning apparatus has a brush operable to move across a screen disposed internally of the filter. The brush is tethered, via a cable and at least one pulley, to a weighted float disposed in an effluent pump chamber associated with the septic tank. The brush therefore moves vertically across the screen with vertical changes the level of effluent in the septic tank.

Abstract: A separating Hole Saw with an off-center locking system is disclosed. The ability to rotate and release the top section, with its attached tapered pilot bit, from the circular saw blade allows for the ease of extraction of that pilot bit from the sawed material, while at the same time provides access to the top of that sawed material. This access offers easy removal of the material that remains within the cavity of the circular saw blade.

Abstract: A septic tank filter that will automatically clean its filtering screen by means of mechanical action resulting from changes in effluent level within the pump chamber of a compartmentalized tank is disclosed. In conjunction with a float, connecting cable, pulleys, and weights; changes in effluent level within the pump chamber of a compartmentalized tank will cause a brush, within the filter unit, to pass over and clean the filter screen within that unit.