Filterwerk Mann + Hummel Gmbh

Rudi Hainle

Rudolf Leipelt

Volker Ernst

Arthur Klotz

Herbert Alf

Volker Lehmann

Plastic housing

A toggle catch for the closing of first and second housing parts of intake air filters for machines which take in air has a toggle lever which pivotally engages in a bearing opening of an abutment, and a hook part. This hook part is pivotally fixed on the toggle lever. The hook part reaches over a projection of the first housing part. A spring band element is provided that has an end-face ear forming the abutment. The spring band element has a hook-shaped end that is engageable in a form-locking manner in a recess of the second housing part.

Toggle catch for intake air filters of internal-combustion engines,

A device for adjusting the intake air temperature of a carburetor-equipped internal combustion engine whose air intake system has a flapper valve in a duct junction admitting cold raw air and/or preheated raw air to the intake filter, depending on the raw air temperature, the flapper valve position being controlled by a pneumatic membrane actuator which receives negative pressure from the intake manifold, via a vacuum line with a thermostat-controlled relief valve responsive to the temperature of the air mixture. In the drive connection between the membrane actuator and the flapper is arranged a wax thermostat which increases or decreases the effective length of the connection in response to the ambient air temperature, thereby adding the thermostat displacements to the actuator displacements, the effective length of the drive connection being further adjustable by means of a threaded connection which is arranged between the membrane support body of the actuator and the wax thermostat.

Device for controlling the intake air temperature of a

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Ludwigsburg, Germany

Rudi Hainle