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. 24, 1997
Filed:
Apr. 19, 1995
Kousuke Kawaguchi, Chiba, JP;
Maruyama Mfg. Co., Inc., Tokyo, JP;
Abstract
The object of the present invention is to provide an aerator for turf which is capable of adjusting the level of the pressing rollers relative to not only the irregularity in its travelling direction but also that in the lateral direction, thus enabling a structure in which a pair of the pressing rollers are rocked, which structure causes an increase in the total weight of the aerator, to be removed. The aerator for turf according to the present invention for injecting high pressure liquid through a plurality of nozzles disposed in its lateral direction in the ground and smoothing ground by a pressing roller after injection, includes a supporting structure for spotting the pressing roller at a frame such that the pressing roller tilts freely relative to the horizontal line in a lateral direction and moves freely vertically relative to the frame, and a biasing structure for biasing the pressing roller downward.