Appeal No. 2006-0004 Παγε 5
Application No. 09/497,359
machine are transferred to the pit of the hoistway, and thereby to the foundation of the
building. Miller teaches (column 2, line 37, to column 3, line 44) that:
Illustrated in FIG. 1 is an elevator system 10 having a car 12 mounted in a
car frame 14, a pair of car guide rails 16, a counterweight 18, a pair of
counterweight guide rails 22, a plurality of ropes 24, a traction machine 26, a
governor 28 and a pair of mounting beams 32.
The car frame 14 is engaged with the car guide rails 16 for movement
through the hoistway (not shown). The guide rails 16 define a guide mechanism
for the motion of the car 12. The guide rails 16, as shown more clearly in FIG. 2,
are T-shaped and include contact surfaces 34 on one leg 36 of each guide rail
16. The car frame 14 include a conventional means to engage the contact
surfaces 34, such as guide shoes or rollers.
The counterweight 18 is engaged with the counterweight guide rails 22 for
movement through the hoistway. The counterweight guide rails 22 define a guide
mechanism for the motion of the counterweight 18. As with the car guide rails 16,
the counterweight guide rails 22 are T-shaped and include contact surfaces on
one leg of each guide rail. The counterweight 18 includes a conventional means
to engage the contact surfaces, such as guide shoes or rollers.
The plurality of ropes 24 are engaged with the car frame 14 and the
counterweight 18. The ropes 24 extend down from a first dead-end hitch 38,
underneath the car frame 14, back up and over a traction sheave 42, down to the
counterweight 18 and back up to a second dead-end hitch 44. Engagement
between the car frame 14 and the ropes 24 is via a pair of tandem car sheaves
46 disposed underneath the car frame 14. Engagement between the
counterweight 18 and the ropes 24 is via a sheave 48 mounted on the
counterweight 18. As a result, the configuration shown in FIG. 1 is a 2:2 roping.
Although shown as such, it should be noted that the present invention may be
used with other roping configurations.
The pair of beams 32 extend through the hoistway on opposite sides of
the car frame 14. The machine 26 is disposed at the top of one 52 of the pair of
beams 32, as shown in FIG. 3. This beam 52 includes a mounting plate 54 to
which the machine 26 is fixed by a plurality of fastening bolts 56. The machine
26, as shown illustratively in FIGS. 1 and 3, is a disc type electric motor 58 and
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Last modified: November 3, 2007