Abstract: A method of automatically regulating a power plant (3?) of an aircraft (1), said power plant comprising at least one turbine engine (3), said aircraft (1) having at least one rotary wing (300) provided with a plurality of blades (301) having variable pitch and driven in rotation by said power plant (3?), it being possible for each engine (3) to operate in an idling mode of operation and in a flight mode of operation. During a selection step (STP0), a two-position selector (60) is operated either to stop each engine (3) or to set each engine (3) into operation. During a regulation step (STP1), each engine (3) is controlled automatically so as to implement the idling mode of operation if the collective pitch (CLP) of said blades is less than a threshold and if the aircraft (1) is standing on the ground.
Abstract: A gas breaker includes a case with a chamber defined therein. The case includes an inlet path and an outlet path which is located corresponding to the inlet path. A board is pivotably located in the chamber and has a sealing member on the first end thereof for sealing the outlet path, and an extension extending from the second end of the board. The extension is engaged with a hook on a hook plate pivotably located in the chamber. When earthquake happens, the hook plate swings due to the earthquake so as to separate the hook and the extension. The sealing member on the first end of the board seals the outlet path to cut off the gas so that the gas cannot enter the gas line of the house.
Abstract: A manual valve for use within the hydraulic control system of Chrysler automatic transmissions. The present manual valve includes flow control structures to vary its standard functions. In a preferred embodiment the manual valve includes a secondary control land, which blocks and redirects hydraulic fluid to an alternate exhaust channel within the present valve when Park gear range is selected. A control orifice meters flow within the alternate exhaust channel and generates a predetermined backpressure to the pressure regulator valve, which provides an increased flow of hydraulic fluid to the torque converter in the Park gear range. This effectively eliminates delayed engagement of the transmission upon shifting into the Drive and Reverse gear ranges. In addition, the present manual valve includes a reverse metering land, which regulates the effect of fluid shock on the reverse servo piston when the Reverse gear range is selected.
Abstract: A flow control valve is made from a one-piece housing which defines a substantially linear flow path. The housing comprises deformable portions coupled to a valve seat and a poppet to allow relative motion therebetween for opening and closing the valve. The deformable portion may comprise a thinned section of a side wall of the housing.
Abstract: A water monitoring and regulation apparatus comprising two vanes connected to two flow meters, a timer, a main gear connected to the two vane shafts, a timer gear connected to the timer, a shut off mechanism, a manual reset and an automatic reset when the shut off has not been engaged. The flow of water through the vanes causes the main gear to turn which causes the timer gear to turn. When the timer gear has turned the number of revolutions corresponding to the pre-selected maximum flow time, the timer will shut off the flow of water. When the water flow is interrupted, as in normal use of the water supply, the time will be automatically reset by the reset mechanism.
Abstract: A control valve for a fluid operated clutch or the like, including a valve body, a first valve mounted for reciprocation in the valve body, a second valve mounted for reciprocation in the valve body and for relative movement with respect to the first valve, one of the valves being concentric with the other, ports in the valves including a throttling port at the interface of the valves, a manual actuator for reciprocally shifting one of the valves, and a rotatable flyweight assembly for reciprocally shifting the other of the valves. Throttled fluid flow from the valve may be directed to a fluid operated clutch to control its capacity and regulate the output speed thereof.
Abstract: A control system, for a rotating clutch having a rotating housing with a cavity adapted to axially slidably receive a clutch actuating piston therein and defining a clutch actuating chamber therebetween, includes a source of fluid, a control valve for infinitely variably supplying the fluid through a path in the housing to the actuating chamber so that the actuating piston is biased in a direction to engage the clutch, a plurality of passages in the housing disposed in fluid communication with the actuating chamber and the path, and including a fluid exhaust passage connecting therewith, and a differentially sensitive centrifugal valve slidably disposed in the passages for relieving fluid from the actuating chamber to the exhaust passage in response to centrifugal force and to fluid pressure in the actuating chamber, and in opposition to fluid pressure in the path in a differential area ratio responsive manner.
May 27, 1975
Date of Patent:
February 8, 1977
Caterpillar Tractor Co.
James G. Starling, Jay J. Wait, Craig W. Riediger