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US 5,626,208 AGranted
Lift assembly
OwnerRandy L. Sprague, Lyndall G. Bodkininventors
Life of this patent
Estimating the term…
Abstract
A lift assembly adapted to be incorporated into a structure for moving an object between adjacent floors of a structure. The lift assembly including a guide rail vertically extending between the adjacent floors, a traveler assembly slidingly disposed on the guide rail, a carrier assembly connected to the traveler assembly for holding the object to be moved, and a drive assembly cooperatively connected to the traveler assembly to cause the traveler assembly to move in an upward direction and a downward direction along the guide rail.
Claims12
A lift assembly for moving an object between a first vertical position and a second vertical position, the lift assembly comprising:
- a guide rail having a first end adapted to be positioned near the first vertical position and a second end adapted to be positioned near the second vertical position, the guide rail having a bore extending from the first end to the second end thereof, a traveler slot extending from the first end to the second end thereof, and a pair of wheel guides extending from the first end to the second end thereof;
- traveler means slidingly engaged with the guide rail for selective movement along the guide rail between the first vertical position and the second vertical position, the traveler means comprising:
- a body member slidingly disposed in the guide rail;
- a first wheel connected to the body member so as to be rollingly engaged with the guide rail within one of the wheel guides;
- a second wheel connected to the body member so as to be rollingly engaged with the guide rail within the other wheel guide of the guide rail;
- a guide block connected to the body member of the traveler means, the guide block having a traveler guide portion slidingly disposed in the traveler slot of the guide rail;
- and
- a gear block extending from the guide block and into the bore of the guide rail, the guide block having a threaded edge;
- carrier means connected to the traveler means for carrying the object as the traveler means moves between the first vertical position and the second vertical position;
- and
- drive means matingly engaged with the traveler means for selectively moving the traveler means between the first vertical position and the second vertical position, the drive means comprising:
- a lift screw rotatably disposed in the bore of the guide rail, the lift screw matingly engaged with the threaded edge of the gear block to move the traveler means in an upward direction when the lift screw is rotated in a first direction and in a downward direction when the lift screw is rotated in a second direction;
- a motor operably connected to the lift screw such that the lift screw is rotatable in the first direction and the second direction;
- a power source;
- and
- a switch interposed between the power source and the motor, the switch being positionable in a first closed position such that electrical continuity is established between the power source and the motor to rotate the lift screw in the first direction, the switch being positionable in a second closed position such that electrical continuity is established between the power source and the motor to rotate the lift screw in the second direction, and the switch being positionable in an open position such that electrical continuity is interrupted between the power source and the motor.
13 more elements
A lift assembly for moving an object between a first floor and a second floor of a structure wherein the second floor of the structure is provided with an opening, the lift assembly comprising:
- a guide rail having a first end mounted to the structure near the first floor thereof and a second end mounted to the structure near the second floor thereof such that the guide rail extends through the opening in the second floor of the structure, the guide rail having 2;
- traveler means slidingly engaged with the guide rail for selective movement along the guide rail between the first floor and the second floor, the traveler means comprising:
- a body member slidingly disposed in the guide rail;
- a first wheel connected to the body member so as to be rollingly engaged with the guide rail within one of the wheel guides;
- and
- a second wheel connected to the body member so as to be rollingly engaged with the guide rail within the other wheel guide of the guide rail
- a guide block connected to the body member of the traveler means, the guide block having a traveler guide portion slidingly disposed in the traveler slot of the guide rail;
- and
- a gear block extending from the guide block and into the bore of the guide rail, the guide block having a threaded edge;
- carrier means connected to the traveler means for carrying the object as the traveler means moves between the first floor and the second floor;
- and
- drive means matingly engaged with the traveler means for selectively moving the traveler means between the first floor and the second floor, the drive means comprising:
- a lift screw rotatably disposed in the bore of the guide rail, the lift screw matingly engaged with the threaded edge of the gear block to move the traveler means in an upward direction when the lift screw is rotated in a first direction and in a downward direction when the lift screw is rotated in a second direction;
- a motor operably connected to the lift screw such that the lift screw is rotatable in the first direction and the second direction;
- a power source;
- and
- a switch interposed between the power source and the motor, the switch being positionable in a first closed position such that electrical continuity is established between the power source and the motor to rotate the lift screw in the first direction, the switch being positionable in a second closed position such that electrical continuity is established between the power source and the motor to rotate the lift screw in the second direction, and the switch being positionable in an open position such that electrical continuity is interrupted between the power source and the motor.
14 more elements
A lift assembly for moving an object between a first vertical position and a second vertical position, the lift assembly comprising:
- a guide rail having a first end adapted to be positioned near the first vertical position and a second end adapted to be positioned near the second vertical position, the guide rail having a bore, a traveler slot, and a pair of wheel guides;
- a body member slidingly disposed in the guide rail;
- a first wheel connected to the body member so as to be rollingly engaged with the guide rail within one of the wheel guides;
- a second wheel connected to the body member so as to be rollingly engaged with the guide rail within the other wheel guide of the guide rail;
- a guide block connected to the body member of the traveler means, the guide block having a traveler guide portion slidingly disposed in the traveler slot of the guide rail;
- and
- a gear block extending from the guide block and into the bore of the guide rail, the guide block having a threaded edge;
- carrier means connected to the body member for carrying the object as the traveler means moves between the first vertical position and the second vertical position;
- a lift screw rotatably disposed in the bore of the guide rail, the lift screw matingly engaged with the threaded edge of the gear block to move the gear block in an upward direction when the lift screw is rotated in a first direction and in a downward direction when the lift screw is rotated in a second direction;
- and
- means for rotating the lift screw in the first direction and in the second direction.
8 more elements
Dependencies are inferred from the claim text.