Delimb arm cam stop

Details Delimb arm cam stop Delimb arm cam stop

2011-08-23

2011-08-23

Walczak, David J. (Department: 3751)

Woodworking

Special-work machine

Tree delimbing

Reexamination Certificate

active

08002004

ABSTRACT:
A timber-working head comprises a frame, first and second delimb arms pivotally coupled to the frame, and a single delimb cylinder operatively coupled to both the first delimb arm and the second delimb arm to pivot the first and second delimb arms relative to the frame to open and close them. The first and second delimb arms are otherwise operatively unconnected from one another allowing pivotal movement of each of the first and second delimb arms without corresponding pivotal movement of the other of the first and second delimb arms. The second delimb arm comprises a cam stop defining a variable closure point for the first delimb arm, and the first delimb arm is configured to pivot into closed engagement with the cam stop.

REFERENCES:
patent: 4194542 (1980-03-01), Eriksson
patent: 4576406 (1986-03-01), Johnson et al.
patent: 5219010 (1993-06-01), Eriksson
patent: 5330242 (1994-07-01), Lucky, Sr.
patent: 5975168 (1999-11-01), Ericksson
patent: 6065513 (2000-05-01), Paakkunainen
patent: 6729372 (2004-05-01), Koster et al.
patent: 6962178 (2005-11-01), Duval
patent: 2009/035434 (2009-03-01), None
Background Information (1 page)(prior art before Jun. 12, 2009).
HTH616 Product Brochure (2 pages)(prior art before Jun.12, 2009).
Images of HTH616 Harvesting Head (6 pages)(prior art before Jun. 12, 2009).
Images of HTH616 Delimb System (8 pages)(prior art before Jun. 12, 2009).
HTH622B Product Brochure (2 pages)(Oct. 2006).
Images of HTH622B Harvesting Head (6 pages)(prior art before Jun. 12, 2009).
Drawings of HTH622B Delimb System (2 pages)(2007).
Pictures of HTH622B Delimb System (4 pages)(prior art before Jun. 12, 2007).
HTH622B Harvesting Head Picture (2 pages)(prior art before Jun. 12, 2009).
HTH624C Product Brochure (3 pages)(prior art before Jun. 12, 2009).
Images of HTH624C Harvesting Head (5 pages)(prior art before Jun. 12, 2009).
HTH626 Product Brochure (2 pages)(2001).
HTH600 Series Product Brochure (12 pages)(Sep. 2007).
TimberRite Product Brochure (6 pages)(Aug. 2008).
Valmet Product Brochure (2 pages)(Nov. 2007).
Image of Valmet Product (1 page)(May 2009).
Ponsse Product Brochure (2 pages)(2005).
Examination Report from Intellectual Property Office of New Zealand for Counterpart New Zealand Patent Application (2 pages)(Jun. 10, 2010).

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