Elevator alert for fluid overflow into elevator pit

Details Elevator alert for fluid overflow into elevator pit Elevator alert for fluid overflow into elevator pit

2008-11-13

2011-11-08

Salata, Anthony (Department: 2837)

Elevator, industrial lift truck, or stationary lift for vehicle

With monitoring, signalling, and indicating means

C187S247000

Reexamination Certificate

active

08051955

ABSTRACT:
The elevator alert includes an elevator pit can (10) and a float switch (240) disposed therein. The float switch (240) produces an alarm-activating signal when the pit can (10) is nearly full and overflow of oil into the pit is imminent. An alarm control unit (200) takes alarm-activating signals from one or more float switch-equipped pit cans (10) to operate a relay (405a,405b) to drive various kinds of alarms and/or elevator controls. A loudspeaker (210) on the pit can (10) emits an audible alarm when the float switch (240) is closed. Optionally, a remote alarm (300) is provided, the remote alarm (300) being activated when the remote alarm float switch (250) is closed. Users of the elevator, such as passenger or building occupants, would hear the audible alarm and call maintenance to thereby prevent an oil spill. The device can be retrofit to existing elevator pit cans.

REFERENCES:
patent: 3437012 (1969-04-01), Bjorklund
patent: 3857359 (1974-12-01), Ward et al.
patent: 4463663 (1984-08-01), Hanson, Jr. et al.
patent: 4680575 (1987-07-01), Yazaki
patent: 4735291 (1988-04-01), Kappenhagen
patent: 5065139 (1991-11-01), Shefsky
patent: 5078236 (1992-01-01), Shimoaki
patent: 5673025 (1997-09-01), Refugio et al.
patent: 5703569 (1997-12-01), Oliver et al.
patent: 5948274 (1999-09-01), Lyon et al.
patent: 5951022 (1999-09-01), Gorman et al.
patent: 6203281 (2001-03-01), Gurega
patent: 6273021 (2001-08-01), Pembroke
patent: 6321876 (2001-11-01), Kawai et al.
patent: 6374723 (2002-04-01), Cook et al.
patent: 7004062 (2006-02-01), Paduano
patent: 7131330 (2006-11-01), Gurega
patent: 7264090 (2007-09-01), Vecchiotti et al.
patent: 2005/0235822 (2005-10-01), Paduano
patent: 2006/0139177 (2006-06-01), Gomery
patent: 2009/0255761 (2009-10-01), Kawai
patent: 06171857 (1994-06-01), None
patent: 7-165380 (1995-06-01), None
patent: 9-077421 (1997-03-01), None
patent: 11-171435 (1999-06-01), None

Affiliated with

Also associated with

Rating

Elevator alert for fluid overflow into elevator pit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elevator alert for fluid overflow into elevator pit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator alert for fluid overflow into elevator pit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4264789