US 12,479,708 B2
Lift system for contaminant mitigation
John A. Eisler, Ruskin, FL (US); Elwood A. Eisler, Cape Coral, FL (US); and Charles Barber, Minerva, NY (US)
Filed by John A. Eisler, Ruskin, FL (US); Elwood A. Eisler, Cape Coral, FL (US); and Charles Barber, Minerva, NY (US)
Filed on Sep. 24, 2021, as Appl. No. 17/485,134.
Claims priority of provisional application 63/083,041, filed on Sep. 24, 2020.
Prior Publication US 2022/0119237 A1, Apr. 21, 2022
Int. Cl. B66F 17/00 (2006.01); B01D 61/14 (2006.01); G05D 16/20 (2006.01)
CPC B66F 17/006 (2013.01) [B01D 61/145 (2013.01); G05D 16/2066 (2013.01)] 28 Claims
OG exemplary drawing
 
1. A contaminant mitigation system for a lift, comprising:
a set of vertical panels configured to be attached to a platform and guardrails of the lift to form a bottom enclosure;
a set of vertical walls arranged to slidingly correspond with the set of vertical panels such that the set of vertical panels and the set of vertical walls cooperate to form a vertically-extendable enclosure;
a controller configured to extend and/or retract the vertically-extendable enclosure to engage a ceiling when the lift platform is positioned at the ceiling; and
an evacuator configured to maintain a negative pressure within the vertically-extendable enclosure when engaged with a ceiling.