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. 26, 1985
Filed:
Jul. 12, 1983
John A Robertson, Chillicothe, OH (US);
Telesis Controls Corporation, Chillicothe, OH (US);
Abstract
Apparatus for forming multi-character messages on the surfaces of solid materials wherein an array of marker pins (88-94) are selectively pneumatically actuated from a corresponding array of solenoid actuated valves (102-104, 106). The marker pins are returned to their operational ready position by a select pneumatic input (96) which performs in conjunction with a pressure limiting valve (126). Continuous monitoring of marker pin performance is carried out by a transducer (166) operating in conjunction with a monitoring duct (168) and selectively located monitoring openings (168a-168g). The marker pins readily are accessed for maintenance in consequence of their positioning within a head structure (12) having access openings at one end (78) and which is retained in position by ball lock pins (64, 65).