摘要:
A device for detecting a malfunction of the evaporative control system comprises a two-way flow device in the atmospheric air vent of the evaporative canister with a sensor to detect whether fluid is flowing through the canister during selected operating conditions.
摘要:
A method and system are provided for the transmission of a refresh signal to a semiconductor memory connected with a central computer bus with predetermined transmission priority, the refresh signal and a refresh repeat signal which determines the chronological transmission of the refresh signal, being transmitted to the memory by a central processing unit at a predetermined priority in relation to other aggregates connected to the computer bus. According to the invention, the refresh repeat signal is split into at least two chronologically successive signals during the first component signal, and the refresh signal is transmitted to the computer bus during transmission of the first component at low priority, transmission of the refresh signal not being possible during the first component, and the refresh signal being placed on the computer bus on a higher priority during the second component signal.
摘要:
Disclosed herein is a self-regulating hydrant which is characterized by a mechanism which automatically alters the flow of fluid through a valve seat in response to changes in ambient temperature. A temperature-responsive member, operatively coupled to a valve plug, is used to control the position of the plug relative to a valve seat. As the temperature of such member changes, its dimensions change. Such dimensional changes are preferably amplified and used to move the plug relative to the valve seat to control the rate of fluid flow through the valve seat.
摘要:
Automatically traveling tube-interior manipulator for the remotely controlled transportation of testing devices and tools along given feedpaths through the tube interior, including a stepping mechanism having at least two links including a rear stepping body and a front counterstepping body as seen in the direction of entry into the tube, at least one gimbal-type joint hinging the bodies to each other, clamping devices disposed on each of the bodies for clamping the bodies to the inner periphery of the tube, driving means associated with at least one of the bodies for transporting the stepping body in the axial direction of the tube relative to the counterstepping body when the clamping device of the stepping body is engaged and the clamping device of the counterstepping body is disengaged and vice versa, guiding elements disposed on the outer periphery of each of the bodies for transportation along the inner periphery of the tube, a line reservoir disposed outside the tube, a flexible harness of supply lines connected from the rear stepping body to the line reservoir, and a manipulator head mounted on the front counterstepping body for the testing devices and tools.
摘要:
1-Phenyl- and -benzyl-2,2-dichloro-cyclopropanes of the formula ##STR1## in which R.sub.1 denotes a hydrogen atom or a methyl, ethyl, propyl, methoxy or ethoxy group,R.sub.2 and R.sub.3 independently of one another represent hydrogen atoms or methyl, ethyl or propyl groups, n is 0 or 1, andthe total number of the carbon atoms in the molecule is at most about 15, and preferably at most about 12,are employed as scents in the cosmetic and home hygiene fields.
摘要:
The sludge water valve for closing the opening communicating with a sludge water discharge channel is disposed in that surface of the side wall of the excess head chamber which is near the solid bed of the filter system and is adapted to open with a hinging movement around a pivot extending substantially at the height of the solid bed along the bottom edge of the valve lid.The discharge rate of the water in the excess head chamber is controlled, and discharge of granular material forming the bed prevented, by the lid being opened stepwise. The top edge of the lid forms a weir edge for the water layer which is immediately above the bed. Consequently, the residual column of the water in the excess head chamber is reduced for the air phase of backwashing.
摘要:
Manipulator assembly for testing the material of a pipe elbow from the inside thereof, the pipe elbow being secured to a pipe union extending from a pressure vessel openable for receiving therein a vertically extending manipulator mast having an arm carrying a manipulator, the manipulator being movable by the arm in vertical direction, rotatably about the axis of the mast and in direction of the longitudinal axis of the arm and transversely thereto, the manipulator includes a multimember vehicle drivable in direction of the pipe-union and pipe-elbow axis, the members of the vehicle being articulatingly connected to one another and having extensible and retractable support legs for supporting the respective vehicular members centered relative to the inner periphery of the pipe elbow, the support legs having roller members at the end thereof for transporting the vehicular members in axial direction of the pipe union and the pipe elbow, the vehicular member located at the head of the multimember vehicle being a test system carrier and being drivable with the vehicle in axial direction of the pipe union and the pipe elbow, the test system carrier having a test system fastened to at least one test arm and mounted so as to be rotatable along predetermined test tracks in circumferential direction of the pipe elbow, drivable radially inwardly and outwardly with the test arm and centerable on the respective center of the pipe elbow, the vehicular members and the test system carrier being mutually engaged by articulating couplings and longitudinally adjustable drive members so that, in an extended readiness position thereof wherein the manipulator is disposed in front of the pipe union, the vehicular members and the test system carrier are oriented in axial direction of the pipe union, are centered on the pipe union center and are rigidly coupled to one another, whereas in a travelling position thereof wherein at least the test system of the manipulator is located within the pipe elbow, the vehicular members and the test system carrier are loosely coupled to one another so that they adapt themselves to the curvature of the pipe elbow as they travel in axial direction thereof.