Concrete slab lifter

Details Concrete slab lifter Concrete slab lifter

2007-05-08

2007-05-08

Slack, Naoko (Department: 3635)

Static structures (e.g., buildings)

Machine or implement

C280S047270, C414S453000

Reexamination Certificate

active

11128504

ABSTRACT:
A concrete slab lifter is disclosed, wherein the concrete slab lifter comprises a central support, a bottom plate attached to the bottom of the central support, a pair of wheels attached near the bottom of the central support, a jaw pivotally attached to the central support, and a handle attached to the top of the central support. The jaw is configured to slide along the central support and comprises a first member attached to the central support and configured to lock in a position flush against the central support, a second member attached perpendicularly to the first member, and a tooth comprising a sharpened plate attached perpendicularly to the second member.

REFERENCES:
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patent: 2086318 (1937-07-01), Jackson
patent: 2329439 (1943-09-01), Leif
patent: 2650786 (1953-09-01), Platt
patent: 2710106 (1955-06-01), Hanson
patent: 3358863 (1967-12-01), Griffith et al.
patent: 3980190 (1976-09-01), Paterson
patent: 5017080 (1991-05-01), Thorndike et al.
patent: 6131927 (2000-10-01), Krawczyk
patent: 6682049 (2004-01-01), Thompson

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