Invention Grant
- Patent Title: Trench shoring extraction device
- Patent Title (中): 沟槽支撑提取装置
-
Application No.: US11868186Application Date: 2007-10-05
-
Publication No.: US07658573B2Publication Date: 2010-02-09
- Inventor: Alan D. Thompson
- Applicant: Alan D. Thompson
- Applicant Address: US CT Shelton
- Assignee: John J. Brennan Construction Co., Inc
- Current Assignee: John J. Brennan Construction Co., Inc
- Current Assignee Address: US CT Shelton
- Agency: St. Onge Steward Johnston & Reens LLC
- Main IPC: E02D17/00
- IPC: E02D17/00
Abstract:
A hydraulic lifting device including a main beam, two or more connection plates fixedly connected to the main beam, at least two legs, each leg pivotably attached to two of the plates, at least two hydraulic cylinders, each cylinder disposed between the beam and one of the legs, and two or more load connectors.
Public/Granted literature
- US20080219777A1 Trench Shoring Extraction Device Public/Granted day:2008-09-11
Information query
