Abstract: An improved pressure sensor includes a Bourdon tube, as its sensing element, and an indicator controlled thereby. At least one tightly closed container is secured to a free end of the Bourdon tube and is partly filled with a bulk material. If the Bourdon tube is made to vibrate as a result of pressure shocks or vibration forces acting upon its fixed end frictional forces that consume vibration energy arise between the container and the amounts of bulk material contained. The indicator includes Hall elements and permanent magnets, which magnets are secured on the Bourdon tube and are moved by it relative to the Hall elements.

Abstract: To securely hold the distributor shaft of a distributor-breaker combination, while permitting relative rotation of the breaker contact carrier plate with respect to a main support plate, a bearing sleeve of elastic material, preferably a thermoplastic, is fitted into both plates, with axial loading, for example by a bowed sheet metal spring, and holding projections to hold the plates together, the bearing sleeve being slotted axially to provide for movable, rotatable connection of the breaker support plate without play in radial as well as in axial direction and permit rapid assembly under production conditions.

Abstract: To prevent corrosion and provide for better relative movement of parts which move only slightly but are exposed to extremes in ambient operating conditions, a tubular piece of plastic material, typically Polyvinylidenfluoride or a polyamide, is drawn over the inner element of a relatively slidable pair, which may, for example be a distributor shaft, the distributor breaker cam, or distributor bearing pins, to cover the surface thereof engaged in slidable contact.