Pit-less elevator
AssigneeOtis Elevator Company
InventorsJames A. Rivera, Bruce St. Pierre, Frank M. Sansevero
Life of this patent
Estimating the term…
Abstract
A pitless elevator system removes a car buffer and machine, and other components where so equipped from under the elevator car such that the elevator car can be operated to a clearance between it and a floor of a hoistway of about three inches. The machine may be mounted on board the car or may be located elsewhere and the car buffer located in normal side clearance space. The system further provides a retractable toe guard to allow the car to bottom at the indicated distance from the floor. The system facilitates retrofit applications of elevators without the prior art drawback of digging a pit.
Claims14
A pitless elevator system comprising:
- a hoistway having a floor;
- a rail system disposed in said hoistway;
- a car buffer;
- and
- an elevator car mounted to said rail system and reciprocally moveable thereon, said car including a structural member positioned to engage said buffer, said car defining a footprint on said floor,
- wherein said buffer is located outside said footprint and said footprint being free from obstruction.
An elevator system comprising:
- a hoistway;
- a rail system disposed in said hoistway;
- a car buffer;
- and
- an elevator car hoistably attached to said rail system, said elevator car being moveable between a first level and an n.sup.th level, said first level being at a floor of said hoistway, said car including a structural member positioned to engaged said car buffer;
- wherein said car buffer is located in clearance space of said hoistway adjacent an area in which said elevator car moves.
An elevator system comprising:
- a hoistway having a floor;
- a car buffer;
- and
- an elevator car moveable within said hoistway, said car including a structural member positioned to engage said buffer, said car defining a footprint on said floor,
- wherein said buffer is located outside said footprint and said footprint being free from obstruction.
Dependencies are inferred from the claim text.