Power driven group operated circuit disconnect apparatus for overhead electric power line
OwnerRonald P. Bridgesinventor
Life of this patent
Estimating the term…
Abstract
A group operated circuit disconnect apparatus for overhead electric power lines has a base in the form of a box-like housing which mounts on a pole, an upright shaft extends through the housing, and a transverse shaft also extends through the housing. A linkage is mounted on the shafts in the housing so that axial rotation of the transverse shaft axially rotates the upright shaft, and this causes three circuit disconnect switches mounted on the housing to be moved simultaneously between closed positions and open positions, or vice versa. An electric motor driven screw and nut drive subassembly for the transverse shaft is mounted in the housing; and the ends of the housing have removable closure plates for access to the linkage and for removal of the subassembly.
Claims27
In an electric circuit disconnect apparatus which has a base rotatable shaft means on said base, and a disconnect switch blade moved between closed and open positions by rotation of said shaft means, a power drive for rotating said shaft means comprising, in combination:
- a power unit which has a reversible rotary shaft;
- a crank arm on said shaft means;
- a driving connection between said reversible rotary shaft and said crank arm, said driving connection including,
- a drive screw rotated by said reversible rotary shaft,
- a member pivotally connected to the crank arm, said member having a threaded mounting on said drive screw so that it is linearly reciprocated by rotation of the drive screw,
- and connecting means between said reversible rotary shaft and said drive screw which permits the latter to pivot in the plane of movement of the crank arm so as to compensate for the difference between the linear reciprocation of said pivotally connected member and the arcuate movement of the crank arm;
- power control means for starting said power unit;
- and additional power control means for automatically stopping said power unit effectively simultaneously with arrival of the switch blade at fully closed position and at fully open position.
In a group operated electric circuit disconnect apparatus for a plurality of overhead electric power distribution lines carried on poles of a type which includes a box-like housing adapted to be mounted adjacent the top of a pole, said housing having opposite ends which are open, a removable closure for each of said open ends, a first disconnect switch surmounting the housing, second and third disconnect switches mounted at opposite sides of the housing, an upright shaft means journalled on and extending through said housing, said upright shaft means being operatively connected to said first switch so that axial rotation of the upright shaft means opens and closes the first switch, transverse shaft means journalled on and extending through said housing, said transverse shaft means being operatively connected to said second and third switches so that axial rotation of said transverse shaft means opens and closes said second and third switches, and a mechanical connection between said upright shaft means and said transverse shaft means within said housing so that axial rotation of one of said shaft means causes axial rotation of the other of said shaft means, the improvement comprising, in combination:
- a subassembly in the housing which is removable through one of said open ends, said subassembly including:
- (1) a reversible electric motor having a rotatable shaft,
- (2) a first part of a driving connection between said electric motor shaft and one of said shaft means for axially rotating said one of said shaft means from said rotatable shaft to selectively open or close the three disconnect switches,
- (3) an electric terminal block for connection between an energizing circuit and said electric motor,
- (4) power control means for automatically stopping the electric motor simultaneously with arrival of the disconnect switches at fully closed position and at fully open position;
- a second part of said driving connection which is immediately adjacent the other of said open ends and manually detachable from said first part;
- and a motor start switch in said energizing circuit remote from said housing.
In a group operated electrical circuit disconnect apparatus for a plurality of overhead electric power distribution lines carried on poles of a type which includes a base adapted to be mounted adjacent the top of a pole, a first disconnect switch surmounting the base, second and third disconnect switches mounted at opposite sides of the base, an upright shaft means journalled on said base, said upright shaft means being operatively connected to said first switch so that axial rotation of the shaft means opens and closes the first switch, transverse shaft means journalled on said base and operatively connected to said second and third switches so that axial rotation of said transverse shaft means opens and closes said second and third switches, and a mechanical connection between said upright shaft means and said transverse shaft means so that axial rotation of one of said shaft means causes axial rotation of the other of said shaft means, the improvement comprising, in combination:
- a power unit which has a reversible rotary shaft;
- a crank arm on one of said shaft means;
- a driving connection between said reversible rotary shaft and said crank arm, said driving connection including,
- a drive screw rotated by said reversible rotary shaft,
- a member pivotally connected to the crank arm, said member having a threaded mounting on said drive screw so that it is linearly reciprocated by rotation of the drive screw,
- and connecting means between said reversible rotary shaft and said drive screw which permits the latter to pivot in the plane of movement of the crank arm so as to compensate for the difference between the linear reciprocation of said pivotally connected member and the arcuate movement of the crank arm;
- power control means for starting said power unit;
- and additional power control means for automatically stopping said power unit effectively simultaneously with arrival of the switch blade at fully closed position and at fully open position.
In an electric circuit disconnect apparatus of a type which includes a box-like housing having opposite ends which are open, a removable closure for each of said open ends, an axially rotatable shaft means journalled on and extending through said housing, and a disconnect switch blade moved between closed and open positions by rotation of said shaft means, the improvement comprising, in combination:
- a subassembly in the housing which is removable through one of said open ends, said subassembly including:
- (1) a power unit,
- (2) a first part of a driving connection between said power unit and said shaft means for axially rotating said shaft means from said power unit to selectively open or close said disconnect switch blade,
- (3) power control means for automatically stopping the power unit effectively simultaneously with arrival of the disconnect switch blade at fully closed position and at fully open position,
- (4) an electric terminal block for connection between an energizing circuit and said power control means;
- a second part of said driving connection which is immediately adjacent the other of said open ends and manually detachable from said first part;
- and a power unit start switch in said energizing circuit remote from said housing.
In a group operated electric circuit disconnect apparatus for a plurality of overhead electric power distribution lines carried on poles of a type which includes a box-like housing adapted to be mounted adjacent the top of a pole, said housing having opposite ends which are open, a removable closure for each of said open ends, a first disconnect switch surmounting the housing, second and third disconnect switches mounted at opposite sides of the housing, an upright shaft means journalled on an extending through said housing, said upright shaft means being operatively connected to said first switch so that the axial rotation of the upright shaft means opens and closes the first switch, transverse shaft means journalled on and extending through said housing, said transverse shaft means being operatively connected to said second and third switches so that axial rotation of said transverse shaft means opens and closes said second and third switches, and a mechanical connection between said upright shaft means and said transverse shaft means within said housing so that axial rotation of one of said shaft means causes axial rotation of the other of said shaft means, the improvement comprising, in combination:
- a subassembly in the housing which is removable through one of said open ends, said subassembly including:
- (1) a power unit,
- (2) a first part of a driving connection between said power unit and one of said shaft means for axially rotating said one of said shaft means from said power unit to selectively open or close the three disconnect switches,
- (3) power control means for automatically stopping the power unit simultaneously with arrival of the disconnect switches at fully closed position and at fully open position;
- (4) an electric terminal block for connection between an energizing circuit and said power control means;
- a second part of said driving connection which is immediately adjacent the other of said open ends and manually detachable from said first part;
- and a power unit start switch in said energizing circuit remote from said housing.
Dependencies are inferred from the claim text.