Shaft-rotated throttle disk
AssigneeFirma Carl Freudenberg
InventorsAndreas Sausner, Karl H. Spies
Life of this patent
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Abstract
A shaft-rotated throttle disk for use in the intake pipe of an internal combustion engine. The shaft is solid and the disk comprises a body (2) of material around it. The throttle disk offers little resistance to the flowing mixture and allows precise adjustment and regulation of the internal combustion engine upon closing. A seal (4) on the outside of the disk material extends on both sides as far as the shaft (1). The seal can be fully engaged with the intake pipe (3) by rotating the shaft.
Claims7
In a shaft-rotated throttle disk for use in the intake pipe of an internal combustion engine, whereby the shaft is solid and the disk includes a body of material surrounding the shaft, the lateral face sides of the body of material surrounding the shaft forming first sealing surfaces that extend in a direction transverse to the shaft;
- the improvement comprising resilient lips of elastomeric material arranged on the outside of the body of material and secured to its circumference and extending on both sides thereof as far as the shaft, said resilient lips forming second sealing surfaces which can be fully engaged with the intake pipe of the engine by rotating the shaft.
In a shaft-rotated throttle disk for use in the intake pipe of an internal combustion engine, whereby the shaft is solid and the disk includes a body of material surrounding the shaft, the lateral face sides of the body of material surrounding the shaft forming first sealing surfaces that extend in a direction transverse to the shaft;
- the improvement comprising a seal arranged on the outside of the body of material and extending on both sides thereof as far as the shaft, said seal forming second sealing surfaces which can be fully engaged with the intake pipe of the engine by rotating the shaft, and said body of material being surrounded between the first and second sealing surfaces by surfaces that are free of sudden changes in direction.
Dependencies are inferred from the claim text.