Material or article handling – Vertically swinging load support – Shovel or fork type
Reexamination Certificate
2011-08-30
2011-08-30
Underwood, Donald (Department: 3652)
Material or article handling
Vertically swinging load support
Shovel or fork type
C212S198000
Reexamination Certificate
active
08007222
ABSTRACT:
A variable counterweight system includes a counterweight and at least one linear transfer device. The counterweight preferably includes a plurality of individual counterweight members. Each linear transfer device preferably includes a moving track and a drive device. The moving track could be a chain or a belt. The drive device is preferably a hydraulic, electric or pneumatic motor. The moving track is preferably retained in a guide track. A control unit receives input from at least one vertical sensor. If an attachment or a boom is in an elevated position, then the control unit powers the at least one drive device to move the counterweight to a rear of the skid steer. If the attachment or boom is in a lowered position, then the control unit powers the at least one drive device to move the counterweight to a front of the skid steer.
REFERENCES:
patent: 2926799 (1960-03-01), Granryd
patent: 3497095 (1970-02-01), Couberly
patent: 5160056 (1992-11-01), Yoshimatsu et al.
patent: 5219180 (1993-06-01), Zipser et al.
patent: 5685563 (1997-11-01), Ottestad
patent: 7128517 (2006-10-01), Kurtz
ET&T Engineering LLP
Sainlo Jeffrey W.
Underwood Donald
LandOfFree
Variable counterweight system for a material handling device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Variable counterweight system for a material handling device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variable counterweight system for a material handling device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2673894