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:
Jul. 09, 2019
Filed:
Feb. 28, 2017
Siemens Energy, Inc., Orlando, FL (US);
Maxwell Pless, Pittsburgh, PA (US);
Stuart C. Weddle, Independence, MO (US);
Richard Sennott, Derry, NH (US);
SIEMENS ENERGY, INC., Orlando, FL (US);
Abstract
A device and method to aid in lapping a spherical washer to a steam turbine component are provided. The device includes a drive head, the drive head made up of a drive cap and a hollow cylindrical portion projecting from the drive cap. The drive cap abuts a surface of the spherical washer. The cylindrical portion fits within and is concentric to an inner diameter of the spherical washer. The device also includes an expanding gasket including an outer diameter having a contour configured to fit a contour of an inner diameter of the spherical washer and an inner diameter slides onto the cylindrical portion such that the gasket and cylindrical portion are concentric. The drive head attaches to a drive unit which imparts a torque to lap the spherical washer with respect to a steam turbine component. The expanding gasket expands and holds the spherical washer during the lapping.