Land vehicles – Wheeled – Attachment
Reexamination Certificate
2002-12-27
2008-11-04
Ellis, Christopher (Department: 3618)
Land vehicles
Wheeled
Attachment
C280S763100, C180S041000
Reexamination Certificate
active
07445240
ABSTRACT:
The present invention includes a hydraulic source (28), at least a plurality of work hydraulic cylinders (11) of a single type, that are to be driven with pressure oil from the hydraulic source (28), a control valve (22) that controls a flow of pressure oil from the hydraulic source (28) to the work hydraulic cylinders (11), an operating means for (26) issuing a command for drive of the control valve (22), a selector switch (41, 42) that selects at least an independent operation of the work hydraulic cylinders (11), and a pressure oil control means (12a,12b,34to37) for allowing the pressure oil to flow to a work hydraulic cylinder (11) selected with the selector switch (41, 42) and disallowing flow of pressure oil to other work hydraulic cylinders (11).
REFERENCES:
patent: 3922855 (1975-12-01), Bridwell et al.
patent: 4087968 (1978-05-01), Bianchetta
patent: 4124226 (1978-11-01), Phillips
patent: 4296773 (1981-10-01), Harshman et al.
patent: 4416344 (1983-11-01), Nakada
patent: 5159989 (1992-11-01), Claxton
patent: 6954150 (2005-10-01), Nishimura et al.
patent: 1 634 769 (1970-09-01), None
patent: 2 238 168 (1974-02-01), None
patent: 1 584 824 (2005-10-01), None
patent: 2 616 201 (1988-12-01), None
patent: 2 351 274 (2000-12-01), None
patent: 53-43321 (1978-04-01), None
patent: 53-107795 (1978-09-01), None
patent: 56-160239 (1981-12-01), None
patent: 60-191584 (1985-12-01), None
patent: 61-85559 (1986-05-01), None
patent: 63-4772 (1988-01-01), None
patent: 64-24163 (1989-02-01), None
patent: 1-103466 (1989-04-01), None
patent: 1-103466 (1989-07-01), None
patent: 01-309859 (1989-12-01), None
patent: 2-33162 (1990-03-01), None
patent: 02-074446 (1990-03-01), None
patent: 2-89051 (1990-07-01), None
patent: 03-008932 (1991-01-01), None
patent: 5-52302 (1993-07-01), None
patent: 6-8460 (1994-02-01), None
patent: 6-24203 (1994-03-01), None
patent: 6-25603 (1994-04-01), None
patent: 8-270608 (1996-10-01), None
patent: 9-316934 (1997-12-01), None
patent: 11-092085 (1999-04-01), None
patent: 11-255015 (1999-09-01), None
patent: 2002-081409 (2002-03-01), None
patent: WO 2004/061313 (2004-07-01), None
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model application No. 171367/1984 (Laid-open No. 85559/1986) (Hitachi Construction Machinery Co., Ltd.) Jun. 5, 1986.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 98633/1986 (Laid-open No. 4772/1988) (Hitachi Construction Machinery Co., Ltd.) Jan. 13, 1988.
Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 166453/1988 (Laid-open No. 89051/1990) (Yutani Heavy Industries, Ltd), Jul. 13, 1990.
International Search Report for PCT/JP02/13830 dated Apr. 30, 2003 (two (2) pages).
International Search Report dated Apr. 30, 2003 ((Two (2) pages).
Supplementary European Search Report dated Dec. 19, 2007 (Three (3) pages).
Japanese office action dated May 1, 2008, with English translation.
Ichimura Kazuhiro
Kodaka Katsuaki
Satake Hidetoshi
Crowell & Moring LLP
Ellis Christopher
Hitachi Construction Machinery Co. Ltd.
Walters John D
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