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:
Jun. 23, 1987
Filed:
Nov. 13, 1984
Applicant:
Inventor:
Bjorn Bjorklund, Vasterhaninge, SE;
Assignee:
Flakt AB, Nacka, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01B / ;
U.S. Cl.
CPC ...
246428 ; 15301 ; 104279 ;
Abstract
In a method of preventing snow from bedding into railway switches, air is blown into the area between the stock rail and the movable rail in a switch, and substantially horizontally in a direction obliquely outwards towards the open end between the stock rail and the movable rail. An apparatus for carrying out this includes a blower assembly (8) between the rails in a railway switch, the assembly being supplied by a fan unit (20) and adapted to provide a substantially horizontal air discharge directed obliquely outwards towards the open end between the stock rail and the movable rail in their separated positions.