Steam stop for steam cleaner

Brushing – scrubbing – and general cleaning – Machines – With air blast or suction

Reexamination Certificate

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Details

C239S587100, C239S587400

Reexamination Certificate

active

10734097

ABSTRACT:
A steam stop safety mechanism for a portable steam cleaner prevents discharge of steam at the cleaner nozzle when attaching and disconnecting attachments, even if the cleaner trigger is in a locked open position. The mechanism includes a steel pin that is displaced in an extended position against a shoulder in the nozzle to prevent pressurized steam from escaping the nozzle. Attachment couplings include a pin retractor plate with a central hub that pushes the pin away from the shoulder to allow the steam to flow through openings in the retractor plate and out a concentrator or attachment hose that has a trigger to release steam as desired.

REFERENCES:
patent: 2337077 (1943-12-01), Woodman
patent: 2487434 (1949-11-01), Geiss et al.
patent: 2615215 (1952-10-01), Stagner
patent: 2949243 (1960-08-01), Raehs et al.
patent: 6536534 (2003-03-01), Sundholm
patent: 6640383 (2003-11-01), Tsen
patent: 2002/0144374 (2002-10-01), Tsen
patent: 2003/0056316 (2003-03-01), Rosa et al.
patent: 2003/0208872 (2003-11-01), Tsen

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