Escalator
AssigneeWestinghouse Electric Corp.
InventorHenry Boltrek
Life of this patent
Estimating the term…
Abstract
An escalator having a drive unit mounted in a supporting truss via a deflection beam. Load forces developed in the drive unit are transmitted from the drive unit to the ends of the deflection beam via elongated mounting base members which are not subjected to bending moments sufficient to cause harmful deflection and misalignment of the driving and rotating elements of the drive unit. The midpoint of a deflection beam is attached to the truss. Positioning devices adjustably orient the drive unit in the truss, and the midpoint connection of the drive unit to the truss adjustably selects the position of the drive unit along the longitudinal axis of the truss.
Claims8
An escalator comprising:
- a truss, said truss including a portion having a longitudinal axis inclined with respect to a horizontal plane,
- a conveyor supported by said truss, a drive unit in said truss for driving said conveyor, said drive unit having X-, Y-, and Z-axes, with said X-axis being a longitudinal axis to be oriented parallel with the longitudinal axis of said truss, said Y-axis being perpendicular to said X-axis in a predetermined plane, and said Z-axis being perpendicular to the predetermined plane which includes the X- and Y- axes,
- first adjustment means for positionally adjusting said drive unit along its Z-axis, and also about its X- and Y- axes,
- second adjustment means for positionally adjusting said drive unit along its Y-axis, and also for positionally adjusting said drive unit about its Z-axis,
- and third adjustment means for positionally adjusting said drive unit along its X-axis,
- said third adjustment means having a single adjustment point, with said third adjustment means being capable of adjusting said drive unit along its X-axis without changing the associated positional adjustments selected by said first and second adjustment means.
An escalator, comprising:
- a truss having a longitudinal axis,
- a drive unit in said truss,
- an elongated deflection member having first and second ends,
- and means mounting said deflection member between said drive unit and said truss, such that at least a portion of the load forces developed in the drive unit are transmitted from the drive unit to the first and second ends of the deflection member, and from substantially the midpoint of the deflection member to the truss.
Dependencies are inferred from the claim text.