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:
Dec. 06, 1994
Filed:
Jan. 13, 1993
Gary F Krofchalk, Rockwall, TX (US);
Other;
Abstract
A forced flow of outside ventilation air may be selectively directed into the cab of a truck using a specially designed fan assembly that works in conjunction with an existing vent structure disposed within a ventilation passage extending through a wall of the cab. The existing vent structure has a control member which is manually operable from the interior of the cab to selectively permit or preclude outside air inflow to the cab interior through the ventilation passage. The fan assembly includes a housing having an open front side, and an open rear side secured to the cab wall portion over the inner side of the ventilation passage. A cover plate having a pair of air flow openings therein is secured to the front side of the housing for pivotal movement relative thereto between a closed position in which the cover plate blocks the front housing side, and an open position providing manual access to the vent structure control member through the housing interior. Mounted on the inner side of the cover plate, over its air flow openings, are a pair of small ventilation fans. With the cover plate in its closed position and the vent structure opened, operation of the ventilation fan draws outside air inwardly through the vent structure and the ventilation passage and forces the outside air into the interior of the cab.