Abstract: A walk-behind lawn aerator has a left and right aerator reels both journalled side by side on the same axle and rotatable independently of one another. Left and right hydraulic drives provide motive power to the left and right reels, and each is capable of rotating the associated reel forward, reverse, or at intermediate speeds. A wheel boom carries front wheels, and is raised and lowered using a hydraulic cylinder. With the wheel boom lowered, the unit is capable of a zero-radius turn.

Abstract: A standard industrial temperature gauge is adapted for a sanitary conduit that has been provided with a tubular stub for mounting the temperature gauge. A disk flange mates with an upper flange of the tubular stub. A aperture or passageway in the disk flange permits the rod probe of the temperature sensor to penetrate through it. An O-ring seal seated within the passageway seals against the rod probe. A female threaded nipple is affixed on the flange disk coaxial with the passageway. This nipple has threads to mate with the male threaded stem of the temperature gauge. A sealing gland or equivalent seal is disposed between the disk flange and the flange of the said tubular stub, so that the sanitary conduit is sealed off when a clamp is installed, removably holding the flange disk in sealed engagement with the tubular stub.

Abstract: A paint mask in stick form is housed in a tubular dispenser. The paint mask permits immediate and convenient use by application to the surface of glass or other base to be protected from inadvertent paint, especially window frames and mullions, while prohibiting paint to affix itself to window glass. The painter may conveniently grip the paint mask stick dispenser and rub the tool end of the dispenser onto targeted areas of the surface to be protected. The mask forms a peelable skin onto which paint, varnish, or other coating material may have adhered or contacted. The use of razor blades or other hard or sharp instruments which might damage the underlying surface, is avoided.