Traversing hoists – Adjustable to transport or nonuse position – Collapsible or foldable boom
Reexamination Certificate
2008-03-04
2008-03-04
Brahan, Thomas J (Department: 3654)
Traversing hoists
Adjustable to transport or nonuse position
Collapsible or foldable boom
C212S168000
Reexamination Certificate
active
11703683
ABSTRACT:
A crane including a telescoping boom has a base boom member and an inner member slidably mounted in the base boom member with a first end projecting from the base boom member. The inner member includes first and second connector elements. A boom extension has a first end including first and second attachment elements. The boom extension also includes first and second spaced bracket assemblies and is shiftable between use and storage positions. A first support associated with the base boom member includes a holder for pivotably retaining the first bracket assembly and a second support has a rail projecting from the base section. A slider is slidably supported by the rail, and an actuator connected between the slider and the boom shifts the slider between a retracted position and an extended position relative to the base boom member. A method of deploying a boom extension is also disclosed.
REFERENCES:
patent: 3785505 (1974-01-01), Keller, Jr.
patent: 3945333 (1976-03-01), Fritsch et al.
patent: 3968884 (1976-07-01), Johnson et al.
patent: 4045923 (1977-09-01), Shanmugasundaram
patent: 4091936 (1978-05-01), Wuerflein et al.
patent: 4141455 (1979-02-01), Henderson et al.
patent: 4318488 (1982-03-01), Rathi
patent: 4431109 (1984-02-01), Behrendt et al.
patent: 4483447 (1984-11-01), Bernabe, Jr.
patent: 4491229 (1985-01-01), Behrendt et al.
patent: 4621742 (1986-11-01), Rathi
patent: 5111945 (1992-05-01), Hull et al.
patent: 5673805 (1997-10-01), Chaffin
patent: 2003-206094 (2003-07-01), None
Birch & Stewart Kolasch & Birch, LLP
Brahan Thomas J
Manitowoc Crane Companies, Inc.
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