Abstract: A stern drive is for propelling a marine vessel in water. The stern drive has an upper drive unit with a lower mounting surface; a lower gearcase coupled to the lower mounting surface and a trailing end surface that is angled relative to the lower mounting surface; and a propeller shaft extending forwardly from the lower gearcase and being configured to rotate a propeller for pulling the marine vessel in the water. The upper drive unit and the lower gearcase are configured such that when a forward side of the lower gearcase impacts an underwater obstruction, the lower gearcase is caused to pivot relative to the upper drive unit until the trailing end surface impacts the lower mounting surface, which thereby causes the lower gearcase to completely uncouple from the upper drive unit.

Abstract: A method is disclosed for manufacturing chamber parts for plasma etching chambers involving electronic discharge machining (EDM) methods that allows silicon and other ceramic materials to be formed and drilled. Key factors disclosed relate to the clamping of such materials for the EDM machining to avoid the electrical current inhibiting influence of oxide coatings that these materials can form.

Abstract: A ventless hood for a commercial deep fat frying pressure cooker having a pot in which cooking is performed by the use of a heated cooking oil bath and steam under pressure derived from the moisture in the food being cooked. The hood comprises a vertical portion at the rear of the cooker and a forwardly extending open-bottom portion spaced from and overlying the pot. The forwardly extending portion of the hood supports a pair of angularly related baffle filters surmounted by a metallic mesh filter and a charcoal filter. A fan in the vertical portion of the hood draws ambient air and cooking gasses through these filters. A water tank is mounted behind the cooker together with a pump to recirculate the water in the tank through a heat exchanging radiator located between the filters and the fan to cool the water. During the cooking cycle excess steam and vaporized cooking oil are introduced into the water bath which acts as a scrubber and condenses the majority of the steam and vaporized cooking oil.

Abstract: A food holding cabinet having a heating and air circulating system overlying the interior of the cabinet, the system including a blower having its inlet side connected to an air mixing chamber and its outlet side connected to an air heating chamber. The air mixing chamber has a first air inlet orifice at the front-top-center of the interior of the cabinet for recirculating air from within the cabinet and a second air inlet orifice in communication with the outside of the cabinet to introduce fresh air, the recirculated air and fresh air being admixed in the air mixing chamber and discharged into the heating chamber. From the heating chamber the air flows downwardly through a duct at the rear of the cabinet, the duct having rows of perforations aligned with the undersurfaces of product containing trays or baskets in the cabinet, the air being drawn through the cabinet for return to the mixing chamber.

Abstract: A food holding cabinet having a closed loop air circulating system to control both heat and humidity, the system including a blower having an air inlet at the front-top-center of the interior of the cabinet, the outlet of the blower being connected to an elongated heating tube the discharge end of which directs heated air over a water reservoir containing a plurality of upwardly projecting removable heat transfer plates. The quantity of moisture introduced into the flowing air is controlled by varying the number of heat transfer plates. The heated and humidified air flows downwardly through a duct at the rear of the cabinet, the duct having rows of perforations aligned with the undersides of product containing trays or baskets in the cabinet, the air being drawn through the cabinet for return to the blower inlet. Heat is controlled by a temperature controller having a probe mounted in the inlet to the blower.