Slide fork

Material or article handling – Elevator or hoist and loading or unloading means therefor – Comprising means enabling additional movement of carrier or...

Reexamination Certificate

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Reexamination Certificate

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10735622

ABSTRACT:
In a slid fork comprising a base portion4, a middle portion6, and a top portion8, a driving motor20rotates sprockets22, 24to drive chains26, 36, respectively, at different speeds. The middle portion6is fixed to the chain26, while the top portion8is fixed to the chain36. The chains26, 36are driven using a predetermined speed and stroke ratios. No sprockets are provided at a leading end of the middle portion. Therefore, no dust is raised from shelves.

REFERENCES:
patent: 940878 (1909-11-01), Jones et al.
patent: 3318469 (1967-05-01), Bigler
patent: 5207555 (1993-05-01), Shirai
patent: 5397211 (1995-03-01), Lloyd et al.
patent: 5839873 (1998-11-01), Lloyd et al.
patent: 6050366 (2000-04-01), Lyons
patent: 6199490 (2001-03-01), Langer
patent: S62-124906 (1987-08-01), None
patent: H2-142724 (1990-12-01), None
patent: 10-35819 (1998-02-01), None
patent: H10-035819 (1998-02-01), None
patent: 2000-317875 (2000-11-01), None
patent: 2002-172569 (2002-06-01), None
patent: 2002-337077 (2002-11-01), None
Japanese Notification of Reason(s) for Refusal dated Apr. 25, 2006. issued in corresponding Japanese patent application No. 2003-025768.

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