Showing papers by "Saab Automobile AB published in 1969"
Patent•
05 Dec 1969TL;DR: In this article, a diaphragm type hydraulic forming tool of the type is described, where the punching and the work holder or die member are rigidly mounted on separate pistons that move in communicated cylinders, so that downward movement of one effects upward movement of the other by reason of displacement of fluid from the bottom of one of said cylinders to the bottom on the other.
Abstract: In a hydraulic forming tool of the diaphragm type, the punch and the work holder or die member are rigidly mounted on separate pistons that move in communicated cylinders, so that downward movement of one effects upward movement of the other by reason of displacement of fluid from the bottom of one of said cylinders to the bottom of the other. Adequate forming force is assured by metering outflow of fluid from the upper portion of the cylinder having the upgoing piston.
33 citations
4 citations
Patent•
22 Sep 1969TL;DR: In this paper, the condition of a signal for each block of vehicle track corresponds to that of a bistable memory unit placed in one condition by momentary output of an arrival detector and in its other condition by the departure detector.
Abstract: The condition of a signal for each block of vehicle track corresponds to that of a bistable memory unit placed in one condition by momentary output of an arrival detector and in its other condition by momentary output of a departure detector. All detectors are actuated by a single type of vehicle-carried exciter. An arrival detector is located near each end of each block. A departure detector is spaced along the track from each arrival detector, in the direction away from the other arrival detector.
1 citations
Patent•
28 Aug 1969TL;DR: A reading machine for bubble chamber photographs has a horizontal film table across which film is lengthwise advanced, frame by frame, from a supply reel at one side of the table to a takeup reel at the other side thereof, and to which the film is flatwise clamped for horizontal movement with the table.
Abstract: A reading machine for bubble chamber photographs has a horizontal film table across which film is lengthwise advanced, frame by frame, from a supply reel at one side of the table to a takeup reel at the other side thereof, and to which the film is flatwise clamped for horizontal movement with the table. Carriers for the reels, extending below the table at opposite sides thereof, are mounted for motion transverse to film length and are driven in such motion in unison with the table to avoid twisting the film.
1 citations
Patent•
21 Nov 1969TL;DR: In this article, a diaphragm type hydraulic forming tool of the type is described, where the punching and the work holder or die member are rigidly mounted on separate pistons that move in communicated cylinders, so that downward movement of one effects upward movement of the other by reason of displacement of fluid from the bottom of one of said cylinders to the bottom on the other.
Abstract: In a hydraulic forming tool of the diaphragm type, the punch and the work holder or die member are rigidly mounted on separate pistons that move in communicated cylinders, so that downward movement of one effects upward movement of the other by reason of displacement of fluid from the bottom of one of said cylinders to the bottom of the other. Adequate forming force is assured by metering outflow of fluid from the upper portion of the cylinder having the upgoing piston.
1 citations
Patent•
22 May 19691 citations
1 citations
Patent•
22 Sep 19691 citations
Patent•
28 Aug 1969TL;DR: In spiral scanning for bubble chamber photographs, an elongated plane mirror which is lengthwise inclined upwardly and outwardly to an axis about which it rotates, to reflect toward the axis light shone downwardly onto it, and a periscope which rotates to have its eye face the mirror and simultaneously moves axially to scan along it, superimposed slotted fixed and movable mask means in front of the perisope eye enable sensitivity and selectivity to be adjusted for different photographs as discussed by the authors.
Abstract: In spiral scanning apparatus for bubble chamber photographs, comprising an elongated plane mirror which is lengthwise inclined upwardly and outwardly to an axis about which it rotates, to reflect toward the axis light shone downwardly onto it, and a periscope which rotates to have its eye face the mirror and simultaneously moves axially to scan along it, superimposed slotted fixed and movable mask means in front of the periscope eye enable sensitivity and selectivity to be adjusted for different photographs.
1 citations
01 Nov 1969
TL;DR: In this paper, a perturbation method was used to measure the quotient between the radius of a circular duct and the curvature of the duct, and the solution included terms of the first and second order of this parameter.
Abstract: The three-dimensional problem of compressible potential flow in a bend of a circular duct is studied by means of a perturbation method. As perturbation parameter is used the quotient between the radius of the duct and the radius of curvature of the duct, and the solution includes terms of the first and second order of this parameter. Numerical calculations have been performed for the values 0.2 and 0.1 of the perturbation parameter, and the plotted result shows how the axial velocity distribution changes from the straight to the curved region of the duct.