Counterweight for an elevator, ballast weights for this...

Details Counterweight for an elevator, ballast weights for this... Counterweight for an elevator, ballast weights for this...

2008-06-17

2008-06-17

Cuomo, Peter M. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific counterbalance means for load support

C187S405000, C187S414000

Reexamination Certificate

active

07387192

ABSTRACT:
The counterweight according to the invention for an elevator with a frame (1) comprising two vertical U-shaped posts (3) parallel and opposed to each other and connected to each other by at least one upper cross-beam (5) and one lower cross-beam (7), wherein the wings of the vertical posts accommodate flat ballast weights forming a mass and piled up on each other in the frame (1), is characterized in that the upper ballast weights (11′a,11′b), at least those located at a higher height than that of the conventional tilted assembly of the lower one-piece ballast weights (11′), comprise at least two parts interlocked with each other so that they can be successively assembled by interlocking them in a plane and in rows between the two posts (3), said interlocking providing a good lateral stiffness to avoid the lateral escape of said two interlocked ballast weight parts (11′aand11′b) out of said frame (1) during counterweight displacement.

REFERENCES:
patent: 389862 (1990-02-01), None
patent: 61-136888 (1986-06-01), None
International Preliminary Examination Report for PCT/IB2004/001711, dated Aug. 21, 2006.

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