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:
Nov. 24, 2015
Filed:
Sep. 26, 2012
Applicant:
Petrowell Limited, Dyce, Aberdeen, GB;
Inventors:
Colin Smith, Aberdeen, GB;
Daniel George Purkis, Aberdeen, GB;
Assignee:
PETROWELL LIMITED, Aberdeen, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 23/04 (2006.01); E21B 23/00 (2006.01); E21B 21/10 (2006.01); E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 23/00 (2013.01); E21B 21/103 (2013.01); E21B 23/004 (2013.01); E21B 23/04 (2013.01); E21B 34/14 (2013.01);
Abstract
A mechanical counting device for actuating a plurality of output devices, the device comprising: linear indexing means adapted to count a plurality of actuating signals and to cause actuation of the output devices when a predetermined number of actuating signals for each output device has been received, wherein the mechanical counting device is adapted to cause actuation of a particular device when a different predetermined number of actuating signals has been received such that the output devices are sequentially actuable.