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. 04, 1976
Filed:
Mar. 19, 1975
Calvin B Blair, Barnard, KS (US);
Other;
Abstract
An improved chain lifter for foldable soil conditioner apparatus of the general type characterized by an elongated, foldable wing frame for soil conditioning members which is hingably mounted transversally on the rear of a main frame, is liftable from the ground by means of a lifting tower on the main frame, and is stabilized by reinforcing chains which extend rearwardly and outwardly from the main frame to the outer ends of the wing frame. Arm members which lift the chains have one end pivotally attached to the main frame whereas the other ends of the members are secured to the reinforcing chains intermediate to the ends thereof. Resilient biasing links interconnect the arm members with the upright lever of the lifting tower. Accordingly, the arms are pivoted upwardly and forwardly by means of the resilient biasing links when the wing frame is folded to a transport position, hence lifting the slackened reinforcing chains off the ground.