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:
May. 12, 1992
Filed:
Sep. 10, 1990
Applicant:
Inventors:
John J Shoenhair, New Hope, MN (US);
Bruce E Kallevig, Monticello, MN (US);
Assignee:
Loram Maintenance of Way, Inc., Hamel, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01B / ; B24B / ;
U.S. Cl.
CPC ...
51178 ; 51267 ;
Abstract
A fan is passively, detachably carried by the grinding head assembly of a railroad track rail grinding machine. The fan plate is oriented above the grinding stone and rotates with the grinding stone during grinding operations. A downward draft of air is induced by the fan to limit the dispersion of sparks, grinding stone residue, and other byproducts of the grinding operation. Water, with or without a surfactant added, can be introduced into the downdraft.