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:
Mar. 11, 1980
Filed:
Jan. 26, 1978
Frank E Vanderwal, Jr, St. Louis County, MO (US);
Sunnen Products Company, St. Louis, MO (US);
Abstract
An apparatus for gaging a workpiece surface during an enlarging operation thereon, said enlarging taking place by a working member which enters the work surface from one direction and by reciprocally moving the workpiece relative to the working member during said operation, said apparatus including a support structure with a gaging member thereon which is located to engage the workpiece opposite from the working member in position to be engaged by the workpiece adjacent to the workpiece surface during each cycle of reciprocal movement between the workpiece and the working member, said gaging member being of a size to be able to enter the workpiece surface only when the workpiece surface has been enlarged to some predetermined size, structure supporting the gaging member including a yieldable member on said support structure normally biasing said gaging member in a direction toward the workpiece, and mechanism for detecting movements of the gaging member relative to the support structure including a sensor operatively connected to the gaging member, which sensor includes a mechanism operable to distinguish when the gaging member moves into engagement with the workpiece at times when the gaging member is not able to enter the workpiece surface and when it is able to enter the workpiece surface. The detecting mechanism means include structure capable of producing a distinctive response indicative of at least one condition of the gaging member when engaged with the workpiece.