Robert Boschgmbh

Anton Frenznick

Emil Buchschmid

Hans-Dieter Schmid

Theodor Sturm

Gerhard Schmidt

Olaf Schmid

Manfred Mitsch

Klaus Lindner

Karl Brandsch

Volker Busch

Rainer Burkel

Werner Pfander

Bernhard Just

Klaus Neidhard

Jean Danamps

Gunther Stradtmann

Ewald Trankle

Eugen Krauss

Gerhard Robl

Dieter Mach

Theodor Strum

Electromagnetic relay

An electromagnetic relay has a base plate, a magnetic yoke mounted on the base plate, a relay winding, a spool core supporting the relay winding, a hinged armature arranged turnably on the spool core, a switching contact supported on the hinged armature, a counter contact cooperating with the switching contact, an adjusting part adjusting a contact distance between the countercontact and the switching contact when the armature is retracted and having at least one stretching zone extending substantially in a movement direction of the armature, the adjusting part forming a lever having a free end cooperating with the switching contact and another end anchored on the base plate, and an adjusting web provided with the stretching zone and engaging at a location between the ends with the adjusting part, so that by extension of the adjusting web to adjust the contact distance at the free end of the adjusting part.

Electrical connection system

Electrical measuring instrument with connecting cable

An insulating cup-shaped body (29) that is screwed into the rim (11) of a vehicle wheel prevents conduction of heat (generated by the brakes, for example) from heating the metallic body (16) that forms a reference pressure chamber closed off by a membrane (17) from the inflated interior of a vehicle tire. The membrane (17) is set slightly within the rim of the cup for protection during tire changes. The chamber and switch housing (16) and a spool (27) for the coil of a resonant circuit form a preassembled unit that is snapped into the insulating cup and cemented into place. The relatively large coil diameter adds to the economy of the device, permitting the use of a small capacitor. The temperature of the gas sealed in the reference pressure chamber (18) by closure of the filling bore with a steel ball (25) follows the temperature of the interior of the tire and reliably opens the resonant circuit if the tire pressure falls below a prescribed limit. The condition of the resonant circuit is sensed by a fixed miniature oscillator mounted on the axle.

Pneumatically operable switch unit for monitoring tire pressure

Growing community of inventors

Nurnberg, Germany

Anton Frenznick