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:
Apr. 07, 2020
Filed:
Oct. 31, 2016
Smith International, Inc., Houston, TX (US);
Brian P. Jarvis, Bristol, GB;
Nigel Wilcox, Bristol, GB;
Brian Williams, Bristol, GB;
Lance Underwood, Morrison, CO (US);
William Murray, Tomball, TX (US);
Peter Thomas Cariveau, Houston, TX (US);
Geoffrey Downton, Cambridge, GB;
Lawrence Lee, Manvel, TX (US);
Shunetsu Onodera, Katy, TX (US);
Daniel Alvarado, Fort Worth, TX (US);
Maxim Pushkarev, Katy, TX (US);
Gokturk Tunc, Houston, TX (US);
Andrei Plop, Houston, TX (US);
Warren Askew, Houston, TX (US);
SMITH INTERNATIONAL, INC., Houston, TX (US);
Abstract
Techniques involve a motor assembly including a rotor and a stator. The stator includes a contact surface for contacting an outer surface of the rotor. The contact surface includes a rigid material. The motor assembly also includes at least one constraint disposed along a length of the motor assembly, where the constraint constrains a radial and/or tangential movement of the rotor relative to the stator. The at least one constraint may be disposed at one or more proximate ends of the motor assembly, and/or along the length of the motor assembly. The contact surface of the stator may have a profile including peaks and valleys, and in some embodiments, the contact surface may be treated to reduce friction and/or wear.