Strata movement indicator

Details Strata movement indicator Strata movement indicator

1993-06-24

1994-09-13

Cuchlinski, Jr., William A.

Geometrical instruments

Indicator of direction of force traversing natural media

Borehole direction or inclination

33 1H, 33787, 116281, 116283, E21B 4700, G01B 530

Patent

active

053456858

ABSTRACT:
A strata movement indicator includes at least two lengths of suspension wire respectively for remote and near anchors locatable in the same borehole. Each wire carries a cylinder provided with indicator markings, the cylinders being moveable with respect to one another and to a reference tube fixed in the mouth of the borehole. Relative movement of the cylinders with respect to one another and/or to the reference tube indicates the degree of strata movement.

REFERENCES:
patent: 2725843 (1955-12-01), Kosai
patent: 3457778 (1969-07-01), Gill et al.
patent: 3538608 (1970-11-01), Bronson
patent: 3568326 (1971-03-01), Dadds
patent: 4070906 (1978-01-01), Rupert et al.
patent: 4348635 (1982-09-01), Wright et al.
patent: 4509449 (1985-04-01), Chalmers
patent: 4514905 (1985-05-01), Lutzens
patent: 4539851 (1985-09-01), Lutenegger
patent: 5105881 (1992-04-01), Thoms et al.

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