Frictional pivots for gravitational alignment

Details Frictional pivots for gravitational alignment Frictional pivots for gravitational alignment

2005-02-18

2010-06-29

Toatley, Jr., Gregory J (Department: 2877)

Optics: measuring and testing

Miscellaneous

C356S614000

Reexamination Certificate

active

07746467

ABSTRACT:
A frictional pivot100for use in a device measuring gravitational alignment is provided. The frictional pivot100comprises a gravity-responsive directional means200for indicating a datum direction of alignment with gravity; frictional pivoting means300, 400for allowing the gravity-responsive means coarsely to align with gravity; vibration means303, 403for vibrating one or more elements of the pivoting means; and portable power means303afor powering the vibration means303, 403.

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Translation of Narisawa Junichi (JP. Publication No. 2002-107143).

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