A Mach/airspeed indicator instrument has two pressure capsules each of which have a finger projecting from one face which is displaced by deflection of the capsule. Each finger is coupled to a respective arm that extends radially from respective shafts, so that displacement of a finger causes rotation of the respective shaft about its axis. Rotation of one shaft causes rotation of a Mach scale plate whereas rotation of the other shaft causes rotation of a pointer around an airspeed scale. The re...

A method of visually reproducing actual and criterion value signals without giving any numerical values includes signal processing of the measuring values forming the basis of the actual value signal, actual and criterion values being fed to a measuring instrument, there to operate at least one indicator (8, 9), the sweep of which defines a surface (S) constituting a measure of the discrepancy between the actual and criterion value signals. The indicator may be of the analogue or quasi-analogue ...

A two-stage latch is used for a tailgate on a vehicle such as an excavator or skid steer loader. The tailgate forms a cover for an engine compartment or other components of the vehicle, and the two-stage latch has a primary latch dog that will hold the cover fully closed. A secondary catch hook is used and includes a lost motion drive for actuating the latch dog. When opening the tailgate the latch hook engages a retainer bracket and will remain in a holding position so that the cover or tailgat...

Method and apparatus for compacting concrete and similar masses according to which the medium to be compacted is, by means of a pressure medium, actuated eccentric mass circulated in a tubular housing with circular cross section, subjected to oscillations.

Disclosed herein are systems and methods for exchange of travel data in a roadway information system associated with a first roadway vehicle and a second roadway vehicle. In one embodiment, the roadway information system may comprise, for example, a first mobile client system associated with the first roadway vehicle, a second mobile client system associated with the second roadway vehicle, a wireless communication network, and a processing system communicatively coupled to the wireless communic...

A spherical indicator for use on board an aircraft comprises one or more pointers supported by members which are mounted to rotate in front of a sphere of the indicator. The member which supports a pointer is mounted to rotate about an axis which passes through the center of the sphere.

A combined vertical speed and windshear indicator instrument for an aircraft has a graduated dial (2) and a conventionally driven pointer (3) for indicating the vertical speed. In addition the instrument has an independent pointer (4) which is driven so that it indicates, to the same scale as the vertical speed, the rate of change of total energy of the aircraft (energy rate) according to the formula dh/dt+(V/g)(dV/dt) where h is the height of the aircraft and V is its true air speed. Under stab...

The small altimeter according to the invention comprises a frame (7-11;14,15), a display comprising drums (45,79) and a dial (23) cooperating with a hand (46) and a multiplying gear train (53 to 57) driving the display in response to the displacements obtained by the aneroid elements (1 to 4). It comprises several aneroid elements (1 to 4) which are cylindrical and coaxial and connected together and with the frame (7-11) of the altimeter. This stacking is divided in two opposed groups (1,2; 3,4)...

A command driving mechanism for command bars which are rotatable about the longitudinal axis of and transversely displaceable with respect to the horizontal reference line of a flight director indicator includes a command plate, the plane of which is parallel to the front face of the indicator. The perpendicular axis of the command plate is coaxial with the longitudinal axis of the indicator and rotatable thereon in accordance with roll commands. Command bar struts are pivotally supported at dia...

Instruments are readable in either feet or meters by printing a metric altitude scale on the inner surface of a rotating protective crystal that shields the English altitude scale and the indicating needle. The metric altitude scale covers 1,000 meters and extends 33.7.degree. beyond a full circle. A series of kilometer index marks is formed at intervals of 33.7.degree. on the face of a bezel which surrounds the English scale. To use the metric scale, the user holds the bezel to align the index ...