Abstract: A vent structure that acts as a combination masonry guide and lintel. The flat interior portion has flanged sides and a bottom disposed perpendicular to the interior plate. An opening is provided in the interior plate so a vent pipe can pass therethrough. The upper flange is the same size as a masonry lintel and is longer than and overhangs the side flanges. The structure is preferably integrally formed from plastic or metal. An exterior protective closure is mounted on the masonry guide once the building structure has been completed. The closure mounts on the vent pipe and will open when air or other fluids are passing from the vent pipe and will automatically close when the flow ceases.

Abstract: This invention is a climbing type tree stand having a seat bracket swivelly mounted thereon with a seat rotatively mounted at the end of such bracket to allow said chair to be turned 360.degree. whereby less interior space is required within said stand than would be required for a rotatable chair that is not swivelly mounted. An elevated rail system is also mounted on the stand and acts as both a guard rail and a gun support means. Either one, two or three pairs of removable wheels are provided for moving the stand to and from its use location and to allow the same to also be used as a big game carrier.

Abstract: This invention is a box filter used in conjunction with newly constructed storm drains and the like to prevent undesirable amounts of sediment and other debris carrier by storm runoff from entering the storm drain. Upper and lower frames are provided with expanded metal interior and exterior sidewalls extending therebetween. The box-like structure has an open bottom, reinforcing plates adjacent the connection of a lift handle and corner braces to add rigidity to the system. An aggregate such as crushed stone is placed between the interior walls and exterior walls of the filter and act as a filter media for the sediment of the debris. This filter is reusable without loss of its filtering qualities due to its rugged construction and back flushable filter medium.

Abstract: This invention is a protector for smoke detectors that can be mounted in atmospheres that have heavy airborne pollution that would normally cause a detector to malfunction. The protector is an enclosure including automated means for opening and closing the door for the Smoke Detector Protector that is relatively airtight when closed to prevent the ambient airborne particles from entering the same. Once the heavy concentration of airborne pollutants caused by manufacturing operations, etc. have been adequately reduced to a level that malfunctioning will not occur, such as when the manufacturing operations have ceased, then the enclosure will be opened to expose the enclosed smoke detector to the ambient atmosphere. Should a fire then occur, the smoke therefrom could be readily detected, and through the normal operation of the smoke detector, an alarm can be signalled.

Abstract: This invention is a washcloth adapted for retaining a bar of soap for use in the bath or shower. The washcloth is fabricated from a continuous, tubular elastic cloth cut into predetermined lengths and stitched together at a closed end forming an internal pocket in a manner similar to that of a conventional sock. An open end of the internal pocket includes an elastic band stitched about the perimeter of the open end which contracts to retain the bar of soap after it has been inserted into the washcloth. Embedded in the elastic band at regular intervals are a plurality of retaining ridges which are disposed inwardly and elastomerically biased to contact the end surface of the bar of soap thereby retaining it within the washcloth. A pair of pull rings are attached to the elastic band and function as finger holds for leverage when inserting the bar of soap into the washcloth. The washcloth contracts to conform to the bar of soap as it is dispensed and used up thereby reducing soap wastage.

Abstract: This invention is a model racetrack that simulates in an authentic manner motor vehicle races including causing the models to crisscross on the straightaway to simulate realistic race conditions. The third and fourth turns have a plurality of lanes which causes some cars to accelerate more than other so that the inside lane tends to go to the outside on the straightaway and the outside lane tends to go to the inside of the straightaway. Also speed controls are provided on a lift conveyor so that the race can be slowed down during "caution flags" and sped back up to race conditions during "green flag" conditions. The models used are authentic reproductions of racing motor vehicles. Different portions of the present invention have different declines for better race simulation of the free wheeling models.

Abstract: This invention is a soil backfilling device mounted on a vehicle used for producing a plurality of aeration holes in a single operation. A control is provided for metering the backfill media into a plurality of metering tubes and a second control is used for selectively disbursing the backfill from the metering tubes into the aeration holes. The backfilling device is shown in conjunction with one type of multiple aeration hole forming machine but, of course, it could be used in conjunction with other machines accomplishing the same results.

Abstract: This invention is a blade guide to allow the angle that the blade addresses a sharpening rod to be repeatedly and accurately re-established. This is accomplished through the provision of a guide plate outwardly projecting from the sharpening rod with a guide arm thereon. When the blade is placed with the back of the blade at the juncture between the guide plate and the guide arm, and the cutting edge of the blade against the sharpening rod the angle the blade addresses the sharpener can repeatedly be re-established before each sharpening stroke of such blade against the sharpener. Once this correct angle is established, it can be maintained even through the blade is no longer engaged with the guide. By making the guide arms adjustable longitudinally along the guide plate, the optimum angle can be set for an infinite number of different sizes of blades. Also indicia is provided on the guide plate so that the proper location of the guide arm can be readily determined by reference to such indicia.

Abstract: This invention is a relatively simple and yet highly efficient disabling mine that is approximately the size of a tube of lip balm or a 20 gauge shotgun shell. A detonator and its associated detonator pin is adapted to fire a detonator cap in the end of a charge chamber. The charge chamber is filled with magnesium except for the area immediately adjacent the detonator cap which is gunpowder that is used as a magnesium igniter. When the mine of the present invention is ignited, it will burn fiercely at a temperature in excess of 3000 Fahrenheit for a period of 5 to 6 seconds which will disable personnel as well as vehicles and other enemy equipment coming in contact therewith. Because of the relatively small size of the mines of the present invention, at least 50 of the same can be carried by a single soldier in a bandolier.

Abstract: An automatic controller utilizes a pulse oximeter signal to regulate the oxygen mixture output, peak expiratory end pressure, and inspiratory ventilation time from a positive pressure respiratory assist ventilator. The pulse oximeter senses a patient's hemoglobin saturation and pulse rate by an optical sensor to develop a signal which is used by calculator to determine the patient's corresponding partial pressure of arterial blood. The calculated partial pressure of arterial blood is then used by the calculator in determining the level of inspired oxygen, peak expiratory end pressure, and inspiratory ventilation time provided to the patient. The calculator generates a signal to control the level of inspired oxygen, expiratory end pressure, and inspiratory ventilation time output from a positive pressure respiratory assist ventilator.