Fire extinguishers – Sprinkler heads
Patent
1989-04-10
1990-12-18
Peters, Jr., Joseph F.
Fire extinguishers
Sprinkler heads
169 42, 169 40, A62C 3708
Patent
active
049779630
ABSTRACT:
A partially concealed fast response sprinkler head having a body defining an inlet to be connected to a water line and having an outlet normally enclosed by a valve cap. The upper ends of a pair of lever members are supported on an internal shoulder in the body. Each lever member is generally semicircular in cross section and the lower ends of the lever members taper inwardly and define a central passage. The valve cap is provided with a threaded bore which receives a screw and the head of the screw engages a retaining bar, the ends of which bear against the upper ends of the respective lever members at a location spaced inwardly from the engagement of the lever members with the body, so that the force of the retaining bar against the lever members will tend to pivot the lower ends of the lever members outwardly away from each other. The retaining bar has a central opening that exposes the head of the screw and by turning out the screw from the threaded bore, a force will be applied to the lever members to urge the lever members outwardly away from each other. The lower ends of the lever members are retained together by a pair of metal heat transfer discs, which are disposed flatwise to each other and have mating open ended recesses that receive the lower ends of the lever members. A fusible metal is located at the interface between the discs. A decorative plate is removably attached to the body and the plate is urged by a spring against the ceiling. When the sprinkler head is exposed to an elevated temperature, the fusible metal will melt and the biasing action on the lever members will urge the lever members apart to release the lever members from engagement with the body and open the valve cap.
REFERENCES:
patent: 2389334 (1945-11-01), Tyden
patent: 2591872 (1952-08-01), Rider
patent: 3130790 (1964-08-01), Hodgman, Jr.
patent: 3195647 (1965-07-01), Campbell et al.
patent: 3459266 (1969-08-01), Ault
patent: 4014388 (1977-03-01), Anderson
patent: 4015665 (1977-04-01), Simons et al.
patent: 4066129 (1978-01-01), Anderson
patent: 4105076 (1978-08-01), Simons et al.
patent: 4376465 (1983-03-01), Simons et al.
patent: 4491182 (1985-01-01), Pieczykolan
patent: 4508175 (1985-04-01), Pieczykolan
patent: 4618002 (1986-10-01), Mears
patent: 4662455 (1987-05-01), Simons
patent: 4757865 (1988-07-01), Simons
patent: 4766961 (1988-08-01), Macie
Ellis Christopher P.
Peters Jr. Joseph F.
Star Sprinkler Corporation
LandOfFree
Partially concealed fast response sprinkler head does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Partially concealed fast response sprinkler head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Partially concealed fast response sprinkler head will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1420611