Material or article handling – Vertically swinging load support – Grab
Reexamination Certificate
2005-02-01
2008-10-07
Underwood, Donald (Department: 3652)
Material or article handling
Vertically swinging load support
Grab
C294S082230
Reexamination Certificate
active
07431554
ABSTRACT:
The improved pinching fingers of the present invention are adapted for easy installation and use on conventional front-end loaders and skid steers. The pinching fingers are opened and closed by the hydraulic cylinder or cylinders used to rotate other common implements, eliminating the need for a separate hydraulic power system for opening and closing the fingers. The pinching fingers also include an equalizer bar and a novel linkage assembly that equalize pressure between the claws and thus allow one claw to continue closing even if the other claw is restricted. This feature allows the pinching fingers to more easily and safely handle irregular and tapered items.
REFERENCES:
patent: 2326338 (1943-08-01), Drott et al.
patent: 2812595 (1957-11-01), Drott et al.
patent: 3077999 (1963-02-01), Svoboda
patent: 3243905 (1966-04-01), Ulrich
patent: 3344540 (1967-10-01), Ulrich
patent: 3455477 (1969-07-01), Blair
patent: 3512665 (1970-05-01), Westendorf
patent: 4030625 (1977-06-01), Koehnen
patent: 4085856 (1978-04-01), Westendorf
patent: RE29805 (1978-10-01), Koehnen
patent: 4266819 (1981-05-01), Pemberton
patent: 4285628 (1981-08-01), Jankowski
patent: 4423997 (1984-01-01), Pemberton
patent: 4538955 (1985-09-01), Langenfeld et al.
patent: 4565485 (1986-01-01), Wilman
patent: 4566844 (1986-01-01), Campin
patent: 4606692 (1986-08-01), Langenfeld et al.
patent: 4787811 (1988-11-01), Langenfeld et al.
patent: 4907356 (1990-03-01), Labounty
patent: 4928410 (1990-05-01), Walters et al.
patent: 4930974 (1990-06-01), Langenfeld et al.
patent: 5073080 (1991-12-01), Blum
patent: 5094581 (1992-03-01), Lamb
patent: 5121557 (1992-06-01), Moore
patent: 5184934 (1993-02-01), Gallo
patent: 5516174 (1996-05-01), Squyres
patent: 5518359 (1996-05-01), Pratt
patent: 5544435 (1996-08-01), Somero
patent: 5564885 (1996-10-01), Staben, Jr.
patent: 5779430 (1998-07-01), Ball
patent: 5788300 (1998-08-01), Dickison et al.
patent: 5957650 (1999-09-01), Rollo
patent: 5997237 (1999-12-01), Langenfeld et al.
patent: 6098320 (2000-08-01), Wass
patent: 6176531 (2001-01-01), Wheeler
patent: 6308440 (2001-10-01), Mueller
patent: 6523284 (2003-02-01), Clugston
patent: 6582177 (2003-06-01), Westendorf et al.
patent: 6601891 (2003-08-01), Gregory
Brochure, The Loader Specialist, WL Series.
SP-43 Bale Lift Operator's Manual.
MDS Manufacturing Co., Inc., Attachment Specialists.
Langenfeld Joseph W.
Westendorf Neal W.
Dowell Anthony
Dowell Baker P.C.
Underwood Donald
Westendorf Manufacturing Co.
LandOfFree
Pinching fingers attachment for utility vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pinching fingers attachment for utility vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pinching fingers attachment for utility vehicles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4018272