Invention Grant
- Patent Title: Lifting device and method for concrete elements
- Patent Title (中): 混凝土构件的起重装置和方法
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Application No.: US13125593Application Date: 2009-10-23
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Publication No.: US09409751B2Publication Date: 2016-08-09
- Inventor: Ernest Frederick Comerford , Mark Andrew Rankin
- Applicant: Ernest Frederick Comerford , Mark Andrew Rankin
- Applicant Address: AU North Sydney, New South Wales
- Assignee: Obelix Holdings Pty Limited
- Current Assignee: Obelix Holdings Pty Limited
- Current Assignee Address: AU North Sydney, New South Wales
- Agency: Bishop Diehl & Lee, Ltd.
- Priority: AU2008905461 20081023
- International Application: PCT/AU2009/001401 WO 20091023
- International Announcement: WO2010/045692 WO 20100429
- Main IPC: B66C1/54
- IPC: B66C1/54 ; B66C1/66 ; E04G21/14

Abstract:
A lifting device (110) for concrete elements such as bridge beam and deck elements, panels and the like up to and beyond 1,000 tons (t) is described. The lifting device may be suitable for face and edge lifting of concrete elements that have a suitable cavity formed within or through them. The lifting device (110) may include a lifting eye (116) connected to an elongate member/shank (114) that has a flared end (122). A sleeve (126) about the shank (114) may be used to raise and lower the moveably attached wedges (124) to and from the flared end (122). In use the wedges (124) upon the flared end (122) prevent the withdrawal of the lifting device (110) from the cavity of the concrete element. A cavity former is also described that may be used in the casting of the concrete element to form a suitable cavity.
Public/Granted literature
- US20110262263A1 Lifting Device and Method for Concrete Elements Public/Granted day:2011-10-27
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