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:
Jun. 22, 1976
Filed:
Feb. 05, 1975
A Lowell Norris, Downers Grove, IL (US);
Darlo E Lienemann, Darien, IL (US);
International Harvester Company, Chicago, IL (US);
Abstract
An air diffuses for use in a seed delivery tube of a pneumatic type of seed planter. This air diffuser is a short length of pipe which is perforated with a plurality of holes. The effective open area of the holes being approximately fifty-percent greater than the open area within the pipe taken on a cross-section of the pipe at the location of the holes. The air diffuser is spliced into the tube at a determinant length from the seed discharge end of the tube. It helps to maintain a uniform spacing of seed planted in the ground by preventing the buildup of back pressure upstream from the seed discharge end of the tube. If back pressure is permitted to build up in the tube, it will change the velocity of the seed traveling through the tube and effect the spacing of the seed planted in the ground.