Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Washer structure – Including antifriction means
Patent
1998-07-20
2000-03-14
Saether, Flemming
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Washer structure
Including antifriction means
411537, 521675, 403 28, F16B 4300
Patent
active
06036422&
ABSTRACT:
A linear roller washer bearing in a bolt interface assembly allows relative differential thermal expansion and contraction motion between a component plate and a base plate fastened together by a bolt without inducing large strains and stresses upon the bolt. The roller washer bearing functions as a thin spacer between the component and base plates enabling high preload tightening of the bolted assembly while enabling relative bidirectional motion of the plates. The roller washer bearing is a multiple roller assembly with thin rollers arranged unidirectionally and horizontally in parallel between the top and bottom washer plates. The rollers roll back and forth to enable relative back and forth alternating unidirectional motion of the component and base plates while the full strength of the bolt remains available to the support the component plate without creating high friction shear forces.
REFERENCES:
patent: 679939 (1901-06-01), Eveland
patent: 3604306 (1971-09-01), Denholm
patent: 5116158 (1992-05-01), Carruthers
Hamada Brian T.
Herman Louis K.
Pan Robert B.
Postma Robert W.
Reid Derrick Michael
Saether Flemming
The Aerospace Corporation
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