ANSELMO JOHN MACCHI
Engineers in Hartford, CT
License number
Pennsylvania PE010457E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Hartford, CT 06105
Pennsylvania
Pennsylvania
Professional information
Pneumatic Elevator
US Patent:
6085873, Jul 11, 2000
Filed:
May 27, 1999
Appl. No.:
9/320935
Inventors:
Anselmo John Macchi - Hartford CT
International Classification:
B65G 5100
US Classification:
187273
Abstract:
A pneumatically operated elevator has a pair of elongated vertical tubular cylindrical shafts and horizontally extending cross-over shafts extending between the vertical shafts adjacent their upper and lower ends to provide a substantially closed system. A cab is disposed within one of the vertical shafts, and a fan in at least one of the cross-over shafts moves air between the ends of the shafts to produce a pressure differential above and below the cab to cause the cab to move upwardly and downwardly in the one shaft. At least one vent is provided to admit air into at least one of the shafts to compensate for leakage from the shafts.