Polak; David R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Polak; David R..The latest application filed is for "system and method for monitoring sheave bearing condition".
- Polak; David R. - Glastonbury CT
| Patent | Date |
|---|---|
| System And Method For Monitoring Sheave Bearing Condition App 20210122608 - Chen; Yan ; et al. | 2021-04-29 |
| Elevator System App 20210101776 - Nichols; Stephen R. ; et al. | 2021-04-08 |
| Methods And Systems For Elevator Crowd Prediction App 20210024326 - Polak; David R. ; et al. | 2021-01-28 |
| Sheave for elevator system Grant 10,773,929 - Ma , et al. Sept | 2020-09-15 |
| System and method for reducing belt noise Grant 10,336,581 - Polak , et al. | 2019-07-02 |
| Elevator virtual aerodynamic shroud Grant 10,246,300 - Polak , et al. | 2019-04-02 |
| Coated sheave Grant 9,815,667 - Yu , et al. November 14, 2 | 2017-11-14 |
| Sheave For Elevator System App 20170267497 - Ma; Jun ; et al. | 2017-09-21 |
| Elevator Safety Spring And Method Of Manufacturing App 20170261058 - Chen; Shihemn ; et al. | 2017-09-14 |
| Sheave for an elevator system Grant 9,630,806 - Wesson , et al. April 25, 2 | 2017-04-25 |
| Elevator Virtual Aerodynamic Shroud App 20170001838 - Polak; David R. ; et al. | 2017-01-05 |
| Coated Sheave App 20150166307 - Yu; Xiaomei ; et al. | 2015-06-18 |
| Sheave For An Elevator System App 20150129366 - Wesson; John P. ; et al. | 2015-05-14 |
| System And Method For Reducing Belt Noise App 20130292211 - Polak; David R. ; et al. | 2013-11-07 |
| System for reducing compressor noise Grant 8,167,540 - Schlinker , et al. May 1, 2 | 2012-05-01 |
| System for reducing compressor noise App 20090191047 - Schlinker; Robert Hans ; et al. | 2009-07-30 |
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