Abstract: A vapor transfer griddle unit with a planar sheet metal heat conductive top member defining a horizontally extensive griddle, a bottom wall sealed to the top member and defining therewith a corresponding vapor chamber disposed below the griddle, a body of vaporizable heat transfer medium in liquid state partially filling the chamber with a vapor space between the surface of the liquid and the griddle at rest as well as over the range of griddling temperatures, a horizontally extensive electric heating array comprised of horizontally spaced electric heater tube portions extending directly beneath and spaced below the griddle and located above the bottom wall, and a set of griddle supports mutually arrayed with the heater tube portions and extending between and engaging the griddle and the bottom wall to provide a pattern of support across the underside of the griddle to maintain the griddle flat over its range of operation, the supports having openings permitting free self-leveling flow of liquid as well as fr

Abstract: Disclosed is an automatic coupling mechanism for snow-plows and the like, provided by a first frame means which is attachable to a propelling vehicle for cooperating with a frame structure of a snow-plow for moving the plow along the road. A second frame means is provided for lockably connecting with the first frame means. Guide means are provided for guiding the first frame means into lockable relative position with the second frame means. Securing means carried by one of the frame means are provided for locking the first and second frame means together when in a lockable position such that as to prevent relative horizontal and vertical motion between the first and second frame means when locked together. Pivotal support means are provided at both the second frame means and the plow frame structure for supporting the plow, allowing free relative vertical movement of the plow with respect to the first and second frame means and controlling orientation of the plow relative to the second frame means.

Abstract: A rechargeable infusate pump for implantation in the human body can be refilled periodically by injection through an inlet septum under the skin. A conduit from the pump outlet conducts fluid to an infusion site in the body. The needle penetrating the septum protrudes into an antechamber and discharges fluid and any foreign matter is trapped in the antechamber so that it cannot enter the pump chamber and possibly clog the pump outlet. This foreign material is removed by injecting a needle into the antechamber and drawing a vacuum to suck out the debris.The pump also has a special ring-like outlet filter in the fluid stream between the pump chamber and its outlet to provide a maximum amount of filter area in a minimum amount of space and the pump outlet includes a special flow controller which is able to very accurately meter the infusate to the selected body site.