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Retrofitted hoist machine |
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Retrofitting an elevator machine with primary and secondary braking |
Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more |
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| 11299374 |
Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine |
Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more |
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Method and kit for retrofitting elevator machines with thrust bearing, and retrofitted elevator machine |
Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more |
2020-08-11 |
| 10625984 |
Counterweight for elevator system |
Bruce St. Pierre, Bruce P. Swaybill |
2020-04-21 |
| 10618775 |
Retrofitting an elevator machine with primary and secondary braking |
Robert K. Williams, John Eschenbrenner, Gregory M. O'Seep, James L. Hubbard, Martin J. Hardesty +5 more |
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Supplemental elevator brake and retrofitting installation procedure |
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