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. 23, 1981
Filed:
Sep. 05, 1978
Wolf E Fischer, Ettlingen, DE;
Semperit AG, Vienna, AT;
Abstract
A connection coupling which can be coupled or connected under pressure and employed with hydraulic lines, comprising a non-pressure loaded coupling half and a coupling half under pressure, in each coupling half there is centrally mounted a valve guide. In each valve guide there is axially displaceably arranged a spring-loaded hydraulically impingeable or loadable valve in such a manner that the valve heads, during the coupling operation, are pressed against one another. The non-pressure impinged valve is shifted through twice the possible valve stroke of the pressure impinged valve, and the non-pressure impinged valve is loaded with a spring which is stronger than the spring loading the pressure impinged valve, so that upon pressure equalization the previously pressure impinged valve is pressed in its open position against a stop provided at the previously pressure impinged coupling half, there being provided a maximum valve-passage cross-section for both valves. The free passage cross-section about the valve guide at least of the non-pressure impinged coupling half is clearly greater than that of the valve-passage cross-section.