Fluid reaction surfaces (i.e. – impellers) – Ambulant – body supported or with carrying handle
Patent
1989-05-26
1990-03-06
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Ambulant, body supported or with carrying handle
416246, 416247R, F04D 2952
Patent
active
049061640
ABSTRACT:
The drawings and description describe a hand-portable fire fighting, positive pressure blower 10 for providing positive pressure within a smoke filled space to remove the smoke, heat and carbon dioxide from a smoke filled space to facilitate the extinguishment of the fire and the overhauling of the space subsequent to the extinguishment. It further greatly enhances the safety of the fire fighters. The blower 10 includes a portable support frame 12 having an internal combustion engine 13 mounted thereon with a two blade wooden prop 18 mounted on the drive shaft for generating a cylindrical stream of fast moving air to be directed into the smoke filled space. The blower 10 includes a tilting mechanism 22 that has a lead screw with a crank that extends between a front leg frame section 58 and a central frame section 24. The front leg section 28 has a vibrational dampening cross frame element 60 that extends between the forward extending left front leg 62 and the right front leg 64. The supporting frame 12 includes a handle frame element 44 that substantially circumscribes the internal combustion 14 for protecting the engine from damage. As illustrated in FIG. 2, the unit when in the contracted position forms a very compact unit that may be readily mounted in a small compartment on a fire fighting vehicle.
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Product Advertisement, "Tempest Certified Performance for Belt-Driven Power Blower", Tempest Technology Corporation, Fresno, Calif., Catalog No. 1A (9/1988).
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Jackman William L.
Ovnicek Ronald M.
Powell Jr. Everette A.
Siria Darrell Lee
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