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US 6,189,436 B1Granted
Radial bellcrank actuator
OwnerRichard L. Brooksinventor
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OwnerRichard L. Brooksinventor
Estimating the term…
A radial bellcrank actuator comprising a piston with a circumferential piston groove, and a bellcrank attached to an output shaft. The bellcrank has a bellcrank piston lobe at one end, and a bellcrank output shaft lobe at the other. The bellcrank piston lobe is attached to the bellcrank output shaft lobe at a bellcrank waist. The bellcrank piston lobe is sized to fit into the piston groove, such that reciprocation of the piston causes rotation of the bellcrank and attached output shaft. Relationships between the dimensions of the bellcrank lobes, the distance between their centers, the thickness of the bellcrank piston lobe, and the waist width are disclosed, which permit the preferred embodiment radial bellcrank actuator to provide up to 90 degrees of rotation. Thus, the instant invention is economical, simple, long-lasting and provides symmetrical loading to its components.
A radial bellcrank actuator comprising a piston having a piston groove, and a bellcrank attached to an output shaft, said bellcrank comprising a bellcrank piston lobe sized to rotatably fit into said piston groove, said piston groove being defined by two annular piston groove walls separated by a piston groove floor, said bellcrank piston lobe bearing only on said piston groove walls during operation of said radial bellcrank actuator, whereby reciprocation of said piston causes said bellcrank, and consequently also said output shaft, to rotate.
A radial bellcrank actuator comprising a piston having a piston groove, said piston groove being defined by two annular piston groove walls separated by a piston groove floor, and a bellcrank attached to an output shaft, said bellcrank comprising a bellcrank piston lobe attached to a bellcrank output shaft lobe at a bellcrank waist, said piston lobe being sized to rotatably fit into said piston groove, said bellcrank piston lobe bearing only on said piston groove. walls during operation of said radial bellcrank actuator, whereby reciprocation of said piston causes said bellcrank, and consequently also said outfit shaft, to rotate.
Dependencies are inferred from the claim text.