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:
Apr. 15, 1986
Filed:
May. 20, 1985
Soren N Sorensen, Nordborg, DK;
Jens Simonsen, Nordborg, DK;
Danfoss A/S, Nordborg, DK;
Abstract
The invention relates to a rotary slide valve subassembly for a hydrostatic steering unit. The slide valve subassembly includes two concentric sleeves having near one end a plurality of circumferentially distributed axially extending slots which, in the neutral position, create a short circuit between the supply and discharge sides. The slots subdivide the corresponding sleeve sections into stays extending from the main sleeve sections. A construction is provided to avoid jamming of the sleeves by joining the stays of each sleeve section with a closed ring member and undercutting the inside diameter of the stays of the inner sleeve section to cause weakening thereof relative to the stays of the outer sleeve section.