Assignee
JOHN EVANS' SONS INC
US·9 granted patents·1 pending application·114 citations·filing 2003–2021
Top patents by PatentIndex Score
10 records- 0195US10174537B1Ribbon coil spring anchor mount system for use in a window counterbalance assemblyJOHN EVANS SONS INC·Filed 2017·Granted Jan 8, 2019·10 cites·19 claims
- 0294US10081972B1Versatile and economic anchor mount for a coil spring in a window counterbalance assemblyJOHN EVANS SONS INC·Filed 2017·Granted Sep 25, 2018·17 cites·18 claims
- 0392US10415287B1Counterbalance system for tilt-in window having a shielded brake shoe structureJOHN EVANS SONS INC·Filed 2016·Granted Sep 17, 2019·12 cites·17 claims
- 0483US11859424B2Window counterbalance brake shoe and spring assembly with improved brake strengthJOHN EVANS SONS INC·Filed 2021·Granted Jan 2, 2024·1 cites·14 claims
- 0583US6857228B2Counterbalance system for a tilt-in windowJOHN EVANS SONS INC·Filed 2003·Granted Feb 22, 2005·37 cites·12 claims
- 0679US6860066B2Shoeless curl spring counterbalance system for a tilt-in windowJOHN EVANS SONS INC·Filed 2003·Granted Mar 1, 2005·32 cites·8 claims
- 0770US9995071B2System and method for inhibiting window sash driftJOHN EVANS SONS INC·Filed 2016·Granted Jun 12, 2018·3 cites·10 claims
- 0866US10941599B2Mounting system for mounting a coil spring to a window frame in a sash counterbalance systemJOHN EVANS SONS INC·Filed 2018·Granted Mar 9, 2021·2 cites·13 claims
- 0942US9845626B2Removable window sash system with integrated spring biased retainerJOHN EVANS' SONS INC·Filed 2016·Granted Dec 19, 2017·0 cites·8 claims
- 1042US2016298369A1Brake Shoe and Stop that Interlock to Prevent Window Sash Drift During UseJOHN EVANS' SONS INC·Filed 2016·Application pending·0 cites
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