Abstract: A mechanical engine protection system includes a temperature responsive valve, a pressure sensing valve and a mechanical shutdown actuator. The valves and actuator are fluidly interconnected so that the actuator is shifted from a run position to a shutdown position upon the occurrence of a high engine operating temperature condition or a low oil pressure condition. The temperature responsive valve includes an inlet port, an outlet port and a drain port. A valve element is positioned by a thermally responsive unit or motor to selectively interconnect the outlet port with either the inlet port or the drain port. The pressure sensing valve includes an inlet port, an outlet port, a drain port and a pilot port. A diaphragm motor positions a valve element in response to the pressure signal applied to the control port to selectively interconnect the outlet port with the inlet port or the drain port. The shutdown actuator includes an inlet port, an actuator rod and a spring loaded diaphragm motor.

Abstract: A mechanical engine protection system includes a temperature responsive valve, a pressure sensing valve and a mechanical shutdown actuator. The valves and actuator are fluidly interconnected so that the actuator is shifted from a run position to a shutdown position upon the occurrence of a high engine operating temperature condition or a low oil pressure condition. The temperature responsive valve includes an inlet port, an outlet port and a drain port. A valve element is positioned by a thermally responsive unit or motor to selectively interconnect the outlet port with either the inlet port or the drain port. The pressure sensing valve includes an inlet port, an outlet port, a drain port and a pilot port. A diaphragm motor positions a valve element in response to the pressure signal applied to the control port to selectively interconnect the outlet port with the inlet port or the drain port. The shutdown actuator includes an inlet port, an actuator rod and a spring loaded diaphragm motor.

Abstract: A vehicle temperature control system includes a control assembly for directing a fluid actuating medium to selected ones of a plurality of door actuators to position a plurality of doors in selected modes of operation. The control assembly includes a valve housing defining a chamber, a fluid inlet passage and a plurality of opposed inlet cavities and outlet passages. A lever positioned slide valve is shiftable within the chamber. An array of control passages defined by the slide valve selectively place the inlet cavities in communication with the outlet passages. Seal members are disposed in each of the inlet cavities and outlet passages to insure that the fluid medium passes through the control passages. A mode selection lever engages the slide valve and also defines a cam surface for selectively actuating an air conditioner compressor switch.

Abstract: A temperature responsive control device achieving sequential control of functions for engine temperature control in response to engine temperature conditions, the first function being controlled by a fluid flow valve and the subsequent function or functions being controlled by an electrical switch means actuated via the valve.

Abstract: A double cylinder lock constructed with a single tailpiece driver and a clutch. The interior lock key can be extracted only when the lock bolt is retracted and not when the lock bolt is extended. The driver and clutch arrangement prevent either cylinder from becoming out of time, regardless of which cylinder is used to throw the bolt.

Abstract: A temperature responsive fluid control valve with sequential control functions, employing a pair of axially aligned hollow elongated plungers or slide pins, and a pair of ball valves and valve seats therefor. One ball valve is straddled by the two plungers, being biased onto its seat by the second plunger and shiftable off its seat by the first plunger. This ball valve controls a first fluid flow in response to a thermoresponsive sensor acting on the first plunger. The second ball valve is operated sequentially after the first, via the second plunger for control of a second sequential fluid flow using the same thermoresponsive sensor.

Abstract: A temperature and pressure responsive fluid flow control valve, particularly useful for controlling the operation of a fluid fan drive. This valve regulates operation of the fluid fan drive by controlling the fluid flow from the fluid fan drive, in response to both engine coolant temperature and fluid pressure of the fan drive oil.

Abstract: An interconnecting lock assembly having simultaneously actuated, multiple security deadbolts, the central one forming part of the main lock subassembly, and the others being operated from the main lock subassembly through special mechanism.

Abstract: An energy conserving refrigerated display case having a control circuit that diverts electrical energy from the antisweat heaters operable during the refrigeration mode of the display, to an evaporator defrost heater during the defrost mode of the display.

Abstract: An open-type air defrost refrigerated display employing recirculatory refrigerated air flow for cooling, and reverse air flow into the ambient and from the ambient for defrost, there being a return air grille opening which is bioriented, with portions oriented to receive recirculatory cold air flow from across the display access opening during refrigeration, and portions oriented to discharge reverse flow defrost air into the ambient during defrost. These second portions are aerodynamically aligned with the adjacent passage from whence the reverse flow defrost air flows.The passage means preferably includes, between the refrigeration coil and the refrigerated air outlet, damper means for restricting the recirculatory refrigerated air flow a controlled amount, while allowing unrestricted reverse defrost air flow therethrough.

Abstract: A multi-curtain, open front refrigerated display case having unique energy saving capacity as a result of the combination of an attached, retractable night curtain specially located between the refrigerated air curtain and the adjacent warmer guard curtain and upon which frost and ice form during closed store hours, with a reverse air defrost flow system that melts the front and ice from the curtain surface prior to retraction thereof at store opening time.

Abstract: An air defrost reach-in refrigerated display case employing aerodynamic isolation of the coil from the product storage and display space during defrost. The fans and refrigeration coil are in a chamber separated from the display space, there being restricted flow flues between this chamber and the display space. Ambient air inlet and discharge ports astraddle the coil and fans, and between the cabinet exterior and this chamber enables short circuit flow of ambient defrosting air through the ports for defrosting of the coil when doors on the ports are open, without significant flow into the storage and display space.

Abstract: A lock of the type enabling panic exit, there being a unique drive arrangement from the inner knob to the latch bolt mechanism and the security dead bolt mechanism. This drive utilizes a vertically reciprocable slide at the inside of the door panel, biased in one direction, and shiftable in the other direction by rotation of the inner knob for retraction of both the latch bolt and the security dead bolt. The drive is not responsive to tampering with the spindle elements, e.g. after forced removal of the outside knob. The lock can be employed on either left or right-hand door arrangements, directly, without requiring handing.

Abstract: A vehicle monitoring system sequentially monitors a plurality of conditions of vehicle sensors for oil, water, air pressures, temperatures and the like. The system includes sequencing means for sequentially sampling data from each of the plurality of sensors and comparing the sensed data with programmed stored parameter limits representative of fault conditions for each parameter sensed. The system includes means for selecting an individual parameter for continuous display and an override circuit for displaying a nonselected parameter if it reaches a programmed limit. Also, a plurality of operator display select switches are provided and are illuminated such that in the event a detected parameter reaches a stored limit, the select switch associated with that parameter flashes in different colors indicating a warning or an alarm fault condition.

Abstract: An energy saving refrigeration system as for refrigerated display cases in stores, free of the usual winter head pressure controls on the condenser equipment, capable of functioning satisfactorily with two-phase, liquid-gas mixtures of refrigerant inlet flow, there being a pair of valves immediately upstream of the evaporator, one being an expansion valve, and the other being a pressure regulator just upstream of the expansion valve adjusted such as to maintain a fixed discharge pressure to the expansion valve, this regulator discharge pressure set sufficiently above the evaporator boiling pressure and set sufficiently below the minimum inlet pressure to the pressure regulator.

Abstract: A multiple curtain, refrigerated display case employing an energy saving air defrost system that, during the first defrost stage, draws defrosting ambient air into the refrigerated air curtain passage from both directions, and during the second defrost stage employs part of the defrost air to form a circulating air curtain over the open front of the case. The case has defrost exhaust fans in the upper rear thereof actuated by a timer simultaneously with deactuation of the guard curtain fans and the refrigeration condensing unit. The circulation fans for the refrigerated air of the case have a total propulsive capacity significantly greater than that of the exhaust fans, such refrigerated air circulation fans being upstream of the refrigeration coils in the refrigerated air curtain passage, and the exhaust fans being downstream of such coils.