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:
Jul. 14, 1981
Filed:
Sep. 17, 1979
Michael D Brown, Boron, CA (US);
Kenneth A Brown, Boron, CA (US);
Other;
Abstract
Apparatus for facilitating the insertion of a cylindrical frame into a filter bag used for collecting airborne particulate matter is disclosed. A cylindrical member is provided which has an axial discontinuity in its sidewalls. The outer diameter of the cylindrical member is at least equal to the inner diameter of the mouth of the bag. The inner diameter of the cylindrical member is no less than the outer diameter of the frame. A device is provided for drawing the sidewalls of the cylindrical member together at the discontinuity so that the outer diameter of the cylindrical member is decreased to slightly less than the inner diameter of the mouth of the bag. The mouth of the bag is then inserted over the end of the cylindrical member, which is released to capture the mouth of the bag. With the mouth of the bag held open by the apparatus of the present invention, the frame can readily be inserted through the other end of the cylindrical member.