Invention Grant
- Patent Title: Drill for a railroad rail having a four position and six way hydraulic control valve
- Patent Title (中): 用于具有四位六通液压控制阀的铁路轨道
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Application No.: US72292Application Date: 1998-05-04
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Publication No.: US5924828APublication Date: 1999-07-20
- Inventor: John D. Lefavour , Armand T. Montminy
- Applicant: John D. Lefavour , Armand T. Montminy
- Applicant Address: CT Fairfield
- Assignee: Framatome Connectors USA Inc.
- Current Assignee: Framatome Connectors USA Inc.
- Current Assignee Address: CT Fairfield
- Main IPC: B23B41/00
- IPC: B23B41/00 ; B23B45/04
Abstract:
A hydraulically powered tool having a motor, a pump, and a hydraulic directional flow control valve. The valve has a frame and a rotatable spool with flow channels. The valve is provided as a four position, six way valve to provide four operational conditions for the tool including NEUTRAL, DRILL, RETRACT and FAST FORWARD.
Public/Granted literature
- USD395046S Cordless telephone Public/Granted day:1998-06-09
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