Rollers for the roller guide of sliding elevator doors

Details Rollers for the roller guide of sliding elevator doors Rollers for the roller guide of sliding elevator doors

1995-05-05

1997-09-16

Merritt, Karen B.

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Including slideably mounted barrier on load support

49409, 1601961, 16107, B66B 1330, E05D 1506

Patent

active

056670397

ABSTRACT:
A roller for use in a roller guide for sliding elevator doors may include a resilient element for effecting quieter elevator operation. The resilient element may form a roller body with a bowl shaped annular casing of sheet steel to run along a carrier section including a preferably greased rail running surface. The roller body may be dimensioned such that the spring effect of the resilient element is stressed only within the elastic range or limit of the sheet steel. To obtain optimum spring effect, a radius of the rail running surface may be slightly greater than a radius of the roller body. Also, the roller body may include an open side.

REFERENCES:
patent: 923706 (1909-06-01), Richey et al.
patent: 2230615 (1941-02-01), Dick
patent: 2293841 (1942-08-01), Long
patent: 2611920 (1952-09-01), Borden
patent: 3460189 (1969-08-01), Wald et al.
patent: 4120072 (1978-10-01), Hormann
patent: 4588049 (1986-05-01), Haas
patent: 4642844 (1987-02-01), Johnston
patent: 5165142 (1992-11-01), Pilsbury

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