Suspension system for isolating vibrations

Details Suspension system for isolating vibrations Suspension system for isolating vibrations

1991-12-17

1993-05-25

Halvosa, George E. A.

Supports

Resilient support

Suspended

267 73, 267168, 267178, 267179, 267203, 267290, 267291, 248621, F16M 1300

Patent

active

052133010

ABSTRACT:
A suspension system for isolating a platform from external vibrations includes spring assemblies suspending the platform. In each spring assembly an elongated outer coil spring is suspended at an upper end thereof from a support structure. A tube is disposed loosely within the outer spring and is attached to a lower end of the spring so as to extend upwardly. An elongated inner coil spring is disposed loosely within the tube and is suspended from an upper point of the tube. The inner spring has a lower end attached to the platform. For friction dampening, o-rings are fitted on the inner spring in sliding contact with the tube.

REFERENCES:
patent: 373640 (1887-11-01), Brill
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patent: 3399879 (1968-09-01), Hojo et al.
patent: 3474992 (1969-10-01), Schuck et al.
patent: 3889937 (1975-06-01), Statler
patent: 4025011 (1977-05-01), Rapps
patent: 4653736 (1987-03-01), Pontoppidan
patent: 4854559 (1989-08-01), Fialon
"Scanning Tunneling Microscopy for Surface Science" by Sang-il Park, G. L. No. 4130 (Stanford University 1987).
"Vibration Isolation for Scanning Tunneling Microscopy" by M. Okano, K. Kajimuru, S. Wakiyama, F. Sakai, W. Mizutani, and M. Ono, J. Vac Sci. Technol. A5(6), 3313-3320 (1987).

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