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. 03, 1977
Filed:
Mar. 15, 1976
Rudolph E Nadherny, Naperville, IL (US);
Illinois Railway Equipment Company, Chicago, IL (US);
Abstract
A lock-down mechanism for a hinged hatch cover having a lock strap with an arm portion projecting laterally over a hopper car roof on the side of the hatchway opposite the hatch cover hinge. An operating lever is pivotally mounted at one end on an upstanding support on the car roof and positioned adjacent one side of the arm portion when the hatch cover is closed. A pawl is pivotally mounted on the operating lever and has a foot portion and a latching portion. The foot portion engages the top side of the press-down arm when the locking mechanism is in its closed condition with the hatch cover fully closed. The latching portion of the pawl engages a formation on the lever support when the mechanism is in locking condition, this latter engagement resulting from an over-center or toggle-like action. The pawl has an upstanding portion which may be readily engaged by a trainman's heel to rotate the pawl and thereby trip or unlatch the lock mechanism so as to free the lever for rotation to its open position allowing the hatch cover to be lifted.