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.

Date of Patent:
Dec. 04, 2001

Filed:

Jan. 28, 2000
Applicant:
Inventor:

John R. Frederick, Polk, PA (US);

Assignee:

Joy MM Delaware, Inc., Wilmington, DE (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21C 3/504 ;
U.S. Cl.
CPC ...
E21C 3/504 ;
Abstract

A protective shield for machines having an operator station protects an operator located on the operator station during operation of the machine. The protective shield defines a flexible curtain of elongated members which covers an exposed side of the operator station, but yet is also of a construction that allows the operator to reach and see through the curtain when desired. The protective shield has an adjustable height to accommodate a variety of machines and to adjust to underground mines having different sizes and shapes. The protective shield is easily removable from and reattachable to machines without the use of additional tools, thereby enhancing its versatility and usefulness. In a preferred embodiment, the protective shield comprises a somewhat stretchable chain mesh, which hangs from a roof canopy extending along side the operator station.


Find Patent Forward Citations

Frederick, John. (2001). Machine used in connection with underground mining having an operator protective shield (U.S. Patent No. 6325460). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6325460

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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