Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control
Reexamination Certificate
2007-11-20
2007-11-20
Brahan, Thomas J. (Department: 3654)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
C187S269000
Reexamination Certificate
active
11383790
ABSTRACT:
An elevator for moving a person between two levels. The system includes at least one carriage in a hoist way extending between two floors. A lever arm lifting system moves the carriage. The lever arm may be an articulated lever arm having a primary arm having a first end rotating on a primary shaft supported on the building structure and a primary sprocket wheel fixed to the primary shaft. A secondary arm has a first end rotating on a secondary shaft carried on a second end of the primary arm. A secondary sprocket wheel is also carried on the secondary shaft and is fixed to the secondary arm. The primary and secondary sprocket wheels are coupled by a chain belt. A second end of the secondary arm is coupled to the carriage. An electric motor is coupled to the primary arm to rotate it around the primary shaft, and to thereby move the carriage between the two levels.
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U.S. patent application entitled “Operating Residential Elevator,” by Harry Bauge, filed May 17, 2006, as U.S. Appl. No. 11/383,788.
Bauge Harry G.
Brahan Thomas J.
Conley & Rose, P.C.
Piper Michael W.
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