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:
Aug. 25, 1981
Filed:
Jul. 12, 1979
John G Price, Montgomery, AL (US);
Other;
Abstract
A method for clearing a railway roadbed of loose material employs elongate sweeper bristle elements, each element comprising a stem terminating in a knob portion which functions as a solid weighting mass and which forms a forward wearing surface. The method includes the steps of rotating a plurality of the sweeper bristle elements over the railway roadbed to be cleared so that the ends of the elements contact the loose material; imparting a centrifugal force on the stem and knob; and striking the loose material with the knob, thereby causing the loose material which contacts the knob to be driven away from the element. The preferred sweeper bristle elements are each comprised of a solid elastomeric stem preferably made of 80 durometer rubber. The stem extends substantially the length of the element and has upper and lower portions. A solid weighting mass forming a forward wearing surface and preferably made from 60 durometer rubber is attached to the lower portion of the stem. The upper portion of the stem engages a rotating drum. The rotation of the drum imparts a centrifugal force on the stem and the knob causing loose material which contacts the element to be driven away from the element.