发明名称 |
Fire fighting fan with three point support |
摘要 |
A portable, positive pressure fan for fire fighting provides a three-leg frame with a platform supporting the fan and its driving engine. The platform carries two forward, laterally spaced collars and one rearward collar to adjustably receive the three legs for support spacedly above a supporting surface. The legs are adjustably positionable in the collars to allow vertical adjustment to regulate fan height and angulation relative to a supporting surface, have an arcuate configuration and are somewhat resilient to absorb and damp operative forces, and the leg array alleviates or negates walking of the structure on a supporting surface caused by vibrations resulting from operational forces. The fan has a blade with diametrically opposed lobes of the aircraft propeller type to create a narrow cone of pressurized air and preserve as great a volume and velocity of such air as possible at ordinary operating distances.
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申请公布号 |
US5503526(A) |
申请公布日期 |
1996.04.02 |
申请号 |
US19950376752 |
申请日期 |
1995.01.23 |
申请人 |
NEILS, JOHN J.;NEILS, JAMES L. |
发明人 |
NEILS, JOHN J.;NEILS, JAMES L. |
分类号 |
F04D25/02;F04D29/60;(IPC1-7):F04D29/64 |
主分类号 |
F04D25/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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