Abstract: Electrical-lead connections between stationary and movable parts of a probe head are rendered virtually insensitive to stress by wrapped development of the lead connections along the length of a spring connection between the stationary and movable parts.

Abstract: In the work-contacting probe head (or on the suspension of the deflectable work-contacting probe head) of a coordinate measuring machine, an electromagnet is provided to trigger a mechanical impact blow or vibration if the switch-contact circuit in the three-point mounting of the probe pin remains open for a predetermined short period of time after completion of a cycle of coordinate measurement of a given work-contacted measurement location. The delivery of the impact is sufficient to overcome any residual mechanical friction that may have interfered with return of the probe to its calibrated at-rest position, at completion of the measurement cycle.

Abstract: A load-compensated gas bearing comprises a base body (1) and a deformable bearing membrane (3) having a central opening for gas flow into a bearing interspace (17). The membrane is suspended from the base body via a ring-shaped web (4) which provides compliant tilt action at a tilt-bearing region (22) of connection to the base body (1). The base body (1) and the membrane (3) form an inner bearing chamber which is separated by the tilt bearing (22) into an outer chamber (9) surrounding the inner chamber (10). Under the action of an external force F on the bearing in the direction to reduce the bearing interspace (17), the membrane (3) is bent in concave shape as a result of the gas-pressure distribution within the bearing interspace (17).

Abstract: The invention relates to an ancillary throttle (2) for gas bearings (1) which are exposed to such varying operational load conditions (F) as to change the magnitude of bearing clearance (S). The throttle (2) stabilizes the bearing clearance (S) by using the load-dependent internal pressure of the bearing (1) to regulate the cross section of the throttle.Inlet (13) and outlet (14) of the ancillary throttle are separated by a membrane (6) which displaceably carries an insert (9) having a slightly conical bore, and the insert (9) is adjustably preloaded by a spring (10).A pin (8), also conical, extends through the bore and coacts with the bore to establish a throttle path of variable cross section. The conical pin (8) is axially displaceable in order to adjust the flow of gas.