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:
Apr. 03, 1984
Filed:
Oct. 11, 1979
Applicant:
Inventors:
John A Wallace, Everett, WA (US);
Bernard R Bader, Bothell, WA (US);
Assignee:
Black Clawson, Inc., Everett, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01B / ; E01B / ;
U.S. Cl.
CPC ...
104 / ; 37105 ; 104-2 ; 238-2 ; 242 76 ; 242 8652 ; 405 38 ; 405258 ;
Abstract
A fabric insertion system for placing fabric in the rock ballast roadbed of an existing railroad track at a predetermined depth beneath the ties of the track includes a car for supporting a roll of fabric which is to be inserted into the ballast. A fabric insertion sled is secured to the car in position beneath the car in the ballast at a predetermined depth beneath the ties. The sled receives fabric from the car and the fabric is diverted within the sled such that it emerges therefrom at the depth of the sled. Fabric is continuously inserted into the ballast as the car and sled are moved along the track.