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. 22, 1984
Filed:
Nov. 16, 1981
Jeffrey C Tucker, Lubbock, TX (US);
H Dale Edmundson, Grants, NM (US);
David L Wigley, Lubbock, TX (US);
Mark F Vallo, Lubbock, TX (US);
Other;
Abstract
A test door has wheels mounted thereon so that one person can easily roll the door to a doorway of a house to be installed. The test door has a fan permanently mounted thereon. The test door has panels or flaps, which slide against the doorway to seal the doorway against leaks. The door has mounted thereon a speed control device, and a tachometer to determine the speed of the fan. The door also has mounted thereon a differential pressure gauge so that the pressure difference from the inside to outside of the door can be measured. Therefore, to determine the amount of leakage of air from a house, the door is rolled to the doorway and quickly placed in the doorway by sliding the flaps out until they seal the doorway. Then by starting the fan, a determination is made as to the amount of air loss for different fan speeds and differential pressures.