Metal bellows type sealed rotary transmission device
AssigneeNormetex
InventorsRemy Leclaire, Daniel Pottier
Life of this patent
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Abstract
A sealed transmission device for controlling a valve including a casing containing a transfer member coupled to a control shaft and to a receiver shaft. A bellows surrounds the receiver shaft and is fixed and sealed at its upper end to the transfer member and is fixed and sealed at its lower end to the casing. The transfer member is operably connected to a tilting member, which tilting member is adapted to protect the bellows from the effects of torsion due to rotation of the control shaft.
Claims13
A sealed rotary transmission device comprising a casing, a control shaft, a receiver shaft extending in the same direction as said control shaft, both of said shafts being mounted in said casing, a bellows in said casing and a transfer member mobile in said casing, said bellows having two opposite ends and surrounding one of said shafts, one end of said bellows being fixed and sealed to said casing and the other end being fixed and sealed to said transfer member, said transfer member is coupled to the two said shafts by respective eccentric linkages, a tilting member is mounted in said casing, two aligned journals disposed perpendicular to said shafts are provided for articulation of said tilting member about an axis transverse to a lengthwise direction of said casing and said transfer member is coupled to said tilting member and guided thereby in said casing with translation ability perpendicular to said shafts.
A sealed rotary transmission device comprising a control shaft, a receiver shaft aligned with said control shaft, a bellows having an upper end and a lower end surrounding said bellows, the lower end of said bellows being fixed and sealed to the lower end of said casing, a movable transfer member is disposed in the upper end of said casing and operably connects the control shaft to the receiver shaft by an eccentric linkage portion of the control shaft and an eccentric linkage portion of the receiver shaft, the upper end of said bellows is fixed and sealed to said transfer member, two journals are disposed in said casing and aligned perpendicularly to said shafts, a tilting member is operably connected to the journals for articulation of said tilting member about an axis transverse to the lengthwise direction of said shafts, and said transfer member is operably connected to said tilting member and guided thereby in said casing with translation ability perpendicular to said shafts.
A sealed rotary transmission device comprising a control shaft, a receiver shaft axially aligned with said control shaft, a bellows having an upper end and a lower end surrounding said receiver shaft, a casing having an upper end and a lower end surrounding said bellows, the lower end of said bellows being fixed and sealed to the lower end of said casing, the upper end of said bellows is fixed and sealed to said transfer member, said control shaft comprises a crank means of said control shaft and the crank of said receiver shaft are eccentric to the axis of the respective control shaft and receiver shaft, the crank means of the control shaft and the crank of the receiver shaft are each operably connected to said transfer member to allow movement of said transfer member in said casing, two journals are disposed in said casing and aligned perpendicularly to said shafts, a tilting member is operably connected to the journals for articulation of said tilting member about an axis transverse to the lengthwise direction of said shafts, and said transfer member is operably connected to said tilting member and guided thereby in said casing with translation ability perpendicular to said shafts.
Dependencies are inferred from the claim text.