US Patent 9663986 Spring counterbalance apparatus and method
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Patent abstract
A spring counterbalance apparatus and method consists of a shade system with a torque profile, where the shade system is connected with a drive shaft. A first spring system is connected with the drive shaft where the first spring system is a standard wound spring system. A second spring system is connected with the drive shaft where the second spring system is a reverse wound spring system and where, in combination, the first spring system and the second spring system produce a counterbalance torque profile approximately equal to the shade system torque profile.
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US Patent 09663986 Spring counterbalance apparatus and method US Patent 9663986 Spring counterbalance apparatus and method
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Patent Number
0966398600
Patent Number
966398600
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Patent Applicant
Patent Jurisdiction
Patent Number
096639860
Date of Patent
May 30, 2017
0Patent Application Number
147134990
Date Filed
May 15, 2015
0Official Website
Patent Primary Examiner
Edits on 25 Sep, 2022
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Is a
Patent Applicant
Patent Jurisdiction
Patent Number
096639860
Date of Patent
May 30, 2017
0Patent Application Number
147134990
Date Filed
May 15, 2015
0Official Website
Patent Primary Examiner
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US Patent 09663986 Spring counterbalance apparatus and method
Infobox
Is a
Patent applicant
Patent jurisdiction
Patent number
09663986
Date of patent
May 30, 2017
Patent application number
14713499
Date Filed
May 15, 2015
Patent primary examiner
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