Pumps – Ambulant – body supported – or with carrying handle
Patent
1979-08-14
1981-05-26
Smith, Leonard E.
Pumps
Ambulant, body supported, or with carrying handle
415210, 415219C, F04B 3912, F04D 2944
Patent
active
042695716
ABSTRACT:
Blowing apparatus suspensible from one's shoulder is provided with a centrifugal fan, in which air is axially sucked and blown off. The fan has a rotor coupled with the output shaft of a prime mover and a casing common to the housing of the apparatus. The housing consists of front, mid and rear coverings, the rear covering being connected with the mid covering to surround the prime mover. The front covering is interiorly formed with fixed vanes similar to the rotary vanes on the rotor. The mid covering has radial stays supporting a central ring to which the casing of the prime mover is removably secured. The front covering is air-tightly connected to the mid covering to define an annular space, an axial entrance and an axial exit with the conical and cylindrical walls of the mid covering. The rotor is disposed and rotated in the space, in which air is centrifugally compressed along the rotary vanes in the rear side of the rotor to peripherally transfer to the front side. Then, compressed air is centripetally guided along the fixed vanes to flow through the exit toward an axial nozzle.
REFERENCES:
patent: 1061205 (1913-05-01), Spencer
patent: 1375595 (1921-04-01), Lamontagne
patent: 1733499 (1929-10-01), Klemm
patent: 2142307 (1939-01-01), Mey et al.
patent: 4132507 (1979-01-01), Akiyama et al.
Akiyama Satoshi
Shikutani Michio
Kabushiki Kaisha Shikutani
Smith Leonard E.
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