Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Nonmetallic resilient mounting
Patent
1976-03-01
1977-06-07
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Nonmetallic resilient mounting
416141, B64C 2738
Patent
active
040280020
ABSTRACT:
A rotor blade retention system connects an elongated rotor blade to a rotor hub that is rotatable about its central axis. The connected rotor blade normally extends generally radially from the hub and is rotatable with the hub. The retention system includes at least three laminated elastomeric bearings connected together in serial compression load transmitting relationship. Each laminated bearing includes a plurality of alternating and bonded together layers of elastomeric material and substantially inextensible material. The layers of each of the serially interconnected bearings are at least partially inclined relative to the longitudinal axis of the rotor blade. In section taken radially of the longitudinal axis of the blade, at least a portion of each layer of each bearing projects longitudinally toward an end of the rotor blade. Preferably, only one of the serially interconnected bearings is rigidly connected to the rotor blade. The rotor blade is spaced radially, relative to its longitudinal axis, from at least all portions of the retention system other than the bearing to which the blade is rigidly connected.
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patent: 3292712 (1966-12-01), Schmidt
patent: 3556673 (1971-01-01), Killian
patent: 3652185 (1972-03-01), Cresap et al.
patent: 3759631 (1973-09-01), Rybicki
patent: 3764230 (1973-10-01), Rybicki et al.
patent: 3782854 (1974-01-01), Rybicki
patent: 3829239 (1974-08-01), Rybicki et al.
patent: 3862812 (1975-01-01), Gorndt et al.
Finney Robert H.
Schmidt Warren E.
Lord Corporation
Powell Jr. Everette A.
Salada Maurice R.
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