A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.
B66B 9/08 - Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
B66B 9/193 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with inclined liftways
B66B 9/16 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
F16D 13/12 - Friction clutches with an expansible band or coil co-operating with the inner surface of a drum or the like
F16D 49/04 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member mechanically actuated
F16D 51/04 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as one or more circumferential bands mechanically actuated
F16D 59/00 - Self-acting brakes, e.g. coming into operation at a predetermined speed
A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.
B66B 9/08 - Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
B66B 9/193 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with inclined liftways
B66B 9/16 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
F16D 13/12 - Friction clutches with an expansible band or coil co-operating with the inner surface of a drum or the like
F16D 49/04 - Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like shaped as a helical band or coil with more than one turn, with or without intensification of the braking force by the tension of the band or contracting member mechanically actuated
F16D 51/04 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as one or more circumferential bands mechanically actuated
F16D 59/00 - Self-acting brakes, e.g. coming into operation at a predetermined speed
A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.
B66B 9/08 - Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
B66B 9/16 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
B66B 9/193 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with inclined liftways
A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Also disclosed is an overspeed braking apparatus for use in slowing a moving load. The overspeed breaking apparatus includes a band brake comprising, a brake drum, one or more windings of a band wound about the brake drum; and an escapement. The escapement includes a toothed gear, a rocking pawl, and biasing means for biasing the pawl into engagement with the toothed gear.
B66B 9/08 - Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
B66B 9/16 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
B66B 9/193 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with inclined liftways
A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.
B66B 9/16 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
B66B 9/08 - Kinds or types of lifts in, or associated with, buildings or other structures inclined, e.g. serving blast furnaces associated with stairways, e.g. for transporting disabled persons
B66B 9/193 - Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure with inclined liftways
