Invention Grant
- Patent Title: Hydraulic impact tool
- Patent Title (中): 液压冲击工具
-
Application No.: US780319Application Date: 1997-01-08
-
Publication No.: US5893419APublication Date: 1999-04-13
- Inventor: Richard N. Hodges
- Applicant: Richard N. Hodges
- Applicant Address: TX Fort Worth
- Assignee: FM Industries, Inc.
- Current Assignee: FM Industries, Inc.
- Current Assignee Address: TX Fort Worth
- Main IPC: B25D9/12
- IPC: B25D9/12 ; B25D9/14 ; B25D9/26 ; B25D9/02
Abstract:
A hydraulically driven hammer has a piston which contains metal piston rings on a constant diameter section. The housing has a plurality of axially spaced apart radial ports that extend through the housing into the bore. A valve supplies fluid to the ports to control reciprocation of the piston.
Public/Granted literature
- USD339164S Multimedia Display Public/Granted day:1993-09-07
Information query
