Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Internationale Research Maatschappij BVfiledCriticalShell Internationale Research Maatschappij BV
Priority to ES452566ApriorityCriticalpatent/ES452566A3/en
Publication of ES452566A3publicationCriticalpatent/ES452566A3/en
Improvements introduced in a gate valve, in which channels are provided opening to the face of the seat and grooves in the face of the slide, characterized in that at least two grooves extend in a direction parallel to the direction in which it can the gate is moved over the seat, each slot communicating with a channel over a part of the stroke length of the gate. (Machine-translation by Google Translate, not legally binding)
ES452566A1976-10-201976-10-20Improvements introduced in a gate valve. (Machine-translation by Google Translate, not legally binding)
ExpiredES452566A3
(en)