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:
Dec. 28, 1993
Filed:
Jul. 13, 1992
Robert E Raymond, Zanesville, OH (US);
Other;
Abstract
An orifice shield for preventing blockage of an orifice restriction by large particulate matter relative to the size of an orifice restriction in a fluid power control circuit. The orifice sheild incorporates a unitary body provided with a wire coil wound about an external threaded portion of the body. The body includes an internal blind bore and longitudinal slots which cooperate to communicate with the opening between coils of the wire. One end of the body is provided with a rotational driver receiving recess to permit external thread on the body to be threaded into a mating bore. A conventional set screw or round head bolt may be readily modified to form the one piece body portion. Other embodiments are described wherein the unitary body includes an internal threaded bore to accept a removably mounted orifice restriction element wherein the orifice restriction element and shielding device forms a compact unit conveniently removably mountable into a fluid power port opening or passage threadably adapted to receive the shielding device.