Back to results
US 5,469,805 AGranted
High visibility valve position indicator
AssigneeKeystone International Holdings Corp.
InventorStephen Gibbs
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeKeystone International Holdings Corp.
InventorStephen Gibbs
Estimating the term…
A high visibility indicator 12 for fitting to the rotatable drive shaft 11 of a rotary actuator 10 is capable of being rotated from a first position to a second position to indicate corresponding first and second positions of the actuator 10. The indicator 12 has an inner cylindrical member 13 fitted to the shaft 11, an outer cylindrical member 15 secured to the housing 10 of the actuator 10, and a sleeve member 17 interposed between members 13, 15 and drivingly connected to each via pin and slot connections 15A, 19, 14A, 18, which are arranged so that rotary movement of inner member 13 produces axial movement of sleeve member 17. The members 13, 15, 17 have color-coded surfaces arranged such that when the sleeve member 17 is at one end of its axial travel, a first color-coded arrangement is visible and when the sleeve member 17 is at the other end of its axial travel, a second color-coded arrangement is visible.
A high visibility indicator adapted to be attached to a rotary actuator having a rotatable shaft and a housing, said indicator comprising an inner cylindrical member, an outer cylindrical member and a sleeve member interposed between said inner and outer cylindrical members and drivingly connected to each of said inner and outer cylindrical members between first and second terminal positions, the inner cylindrical member being adapted for connection to said shaft of said actuator, the outer cylindrical member being adapted to be secured to said housing of said actuator, said driving connections arranged such that rotational motion of the inner cylindrical member results in axial motion of said sleeve member, the outer cylindrical member being opaque for a first half of its axial extent and being transparent for a second half of its axial extent, said sleeve member being a different color from the first half of the axial extent of the outer cylindrical member, and said inner cylindrical member being surfaced such that said indicator displays a first color-coded arrangement when said sleeve member is at said first terminal position and a second color-coded arrangement when said sleeve member is at said second terminal position.
A high visibility indicator adapted to be attached to a rotary actuator having a rotatable shaft and a housing, said indicator comprising an inner cylindrical member, an outer cylindrical member, and a sleeve member interposed between said inner and outer cylindrical members and drivingly connected to each of said inner and outer cylindrical members between first and second terminal positions, the inner cylindrical member being adapted for connection to said shaft of said actuator, the outer cylindrical member being adapted to be secured to said housing of said actuator, said driving connections arranged such that rotational motion of the inner cylindrical member results in axial motion of said sleeve member, said outer cylindrical member being entirely transparent, said inner cylindrical member being provided with a first color for a first half of its axial extent and a second color for the other half of its axial extent, the sleeve member also being colored such that said indicator displays a first color-coded arrangement when said sleeve member is at said first terminal position and a second color-coded arrangement when said sleeve member is at said second terminal position.
Dependencies are inferred from the claim text.