The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2001
Filed:
Dec. 02, 1998
Charles Abernethy Anderson, Banchory-Devenick, GB;
Alan Martyn Eddison, Stonehaven, GB;
Andergauge Limited, Scotland, GB;
Abstract
A mounting arrangement for a pendulum in a downhole drift indicator comprises a plunger and a pendulum defining respective normally spaced apart first and second surfaces, and a pivot connection between the plunger and pendulum including a connecting pivot member. On the pivot connection being subject to a predetermined load the first and second surfaces engage to limit the load experienced by the pivot member. Also disclosed is a drift Indicator biassing arrangement, the arrangement including a housing partially defining a volume for containing a fluid reservoir, a signalling plunger and floating piston defining respective wall portions of the volume and being moveable relative to the housing. A spring acts on the piston to compress the fluid in the volume and move the signalling plunger relative to the housing.