Shaft vibration damper

Details Shaft vibration damper Shaft vibration damper

1978-08-31

1980-08-19

Lazarus, Ira S.

Cutlery

74574, 308237R, F16C 300

Patent

active

042177669

ABSTRACT:
An apparatus (120) for intermittent support of a rotatable shaft (22) comprises an axial collar (120) substantially coaxial with the shaft (22) and fixed thereabout for rubbing contact with the shaft (22) only after the shaft deflects a predetermined amount from its rotational axis (140) to alter the bending mode of the shaft (22) thereby increasing the first order critical speed of the shaft (22) to a level above the maximum speed at which the shaft (22) may be driven to prevent excessive vibration and consequent damage to the shaft (22), associated end couplings (35,56) and housing (78,84,92).

REFERENCES:
patent: 1627936 (1927-05-01), Swenson
patent: 1768290 (1930-06-01), Newkirk
patent: 2652700 (1953-09-01), Seibel
patent: 2781436 (1957-02-01), Barden
patent: 2889695 (1957-06-01), Moeller
patent: 2906572 (1959-09-01), Wroby
patent: 3150900 (1964-09-01), Bruenig
patent: 3318410 (1967-05-01), Johnson
patent: 3887024 (1975-05-01), Takahashi
patent: 3897984 (1975-08-01), Matheny
patent: 3938354 (1976-02-01), Lehman
patent: 4061279 (1977-12-01), Sautter
patent: 4085627 (1978-04-01), Losee
patent: 4134309 (1979-01-01), Balke et al.

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