US Patent 7222697 Elevator
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Patent abstract
An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected pulley set installed on the top of the carriage, a rotary wheel installed in the carriage and a steel rope. The steel rope connects the first series connected pulley set, the second series connected pulley set and the rotary wheel, so that the gravity load of one pulley set can belowered to decrease the pulling force of the steel rope to enhance the safety of the elevator.
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US Patent 07222697 Elevator US Patent 7222697 Elevator
Infobox
Patent Number
0722269700
Patent Number
722269700
Edits on 23 May, 2023
Golden AI
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Official Website
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Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
072226970
Date of Patent
May 29, 2007
0Patent Application Number
110757320
Date Filed
March 10, 2005
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
072226970
Date of Patent
May 29, 2007
0Patent Application Number
110757320
Date Filed
March 10, 2005
0Official Website
Patent Primary Examiner
Edits on 15 Jun, 2022
Golden AI
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US Patent 07222697 Elevator
Infobox
Is a
Patent jurisdiction
Patent number
07222697
Date of patent
May 29, 2007
Patent application number
11075732
Date Filed
March 10, 2005
Patent primary examiner
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