Fluid reaction surfaces (i.e. – impellers) – Ambulant – body supported or with carrying handle
Patent
1992-02-28
1993-04-27
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Ambulant, body supported or with carrying handle
417234, 169 52, 169 91, A62C 3900
Patent
active
052057119
ABSTRACT:
A hand portable positive pressure blower for fire fighting is described which includes an engine 10 with a drive shaft 12 mounting a propeller 16 within a propeller guard 22. This assembly is rigidly mounted to a central frame 27 that itself is rigid and extends about the engine. The central frame 27 is mounted by pivots 47 to a rigid support frame 37 for movement about a fixed adjustment axis 50. An adjustment means is provided to enable selective angular positioning of the central frame about the adjustment axis. The support frame 37 is mounted on rubber feet 42, 43 at integral pairs of forward and rearward legs 38, 39. The legs 38, 39 are angularly oriented with respect to the adjustment axis. Distances from the feet to the adjustment axis and the angular relationship of the blades promotes a secure footing for the blower and a compact configuration to facilitate transport and storage. The propeller includes a unique dished configuration on forward surfaces inward of blade ends to facilitate production of a wide cone of air current emitted from the blower during operation.
REFERENCES:
patent: 2035479 (1936-03-01), Hueglin
patent: 2176325 (1939-10-01), Bretzlaff et al.
patent: 2215035 (1940-09-01), Gundelfinger
patent: 2633293 (1953-03-01), Jones
patent: 2884075 (1959-04-01), Poon
patent: 2954198 (1960-09-01), Lindberg et al.
patent: 4682729 (1987-07-01), Doman et al.
patent: 4906164 (1990-03-01), Jackman et al.
patent: 4907654 (1990-03-01), Eberhardt
patent: 4949591 (1990-08-01), Roelle
patent: 4976319 (1990-12-01), Eberhardt et al.
patent: 5062487 (1991-11-01), Siria et al.
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Advertisement: "Typhoon," Mar. 1989.
Lee Michael S.
Look Edward K.
Unifire Power Blower, Inc.
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