Invention Grant
- Patent Title: Pile driving systems and methods employing preloaded drop hammer
- Patent Title (中): 桩驱动系统和方法采用预载落锤
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Application No.: US12683383Application Date: 2010-01-06
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Publication No.: US08763719B2Publication Date: 2014-07-01
- Inventor: John L. White
- Applicant: John L. White
- Applicant Address: US WA Kent
- Assignee: American Piledriving Equipment, Inc.
- Current Assignee: American Piledriving Equipment, Inc.
- Current Assignee Address: US WA Kent
- Agency: Schacht Law Office, Inc.
- Agent Michael R. Schacht
- Main IPC: E02D7/14
- IPC: E02D7/14 ; E02D7/06 ; E02D7/12
Abstract:
A pile driving system for driving a pile. The pile driving system comprises a housing assembly, a hammer, a helmet member, and a lifting system. The housing assembly defines at least one vent opening is arranged at a first vent location along the drive axis, and at least one vent opening is arranged at a second vent location along the drive axis. When the hammer drops and is above the first vent location, ambient air flows from the main chamber through the vent openings formed at the first and second vent locations. When the hammer is below the first vent location and above the second vent location, ambient air flows from the main chamber through the vent openings formed at the second vent location. When the hammer is below the second vent location, air within the main chamber is compressed to preload the helmet member.
Public/Granted literature
- US20110162859A1 PILE DRIVING SYSTEMS AND METHODS EMPLOYING PRELOADED DROP HAMMER Public/Granted day:2011-07-07
Information query
