Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
2000-11-29
2002-09-03
Johnstone, Adrienne C. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S130000, C156S259000, C156S406400
Reexamination Certificate
active
06444070
ABSTRACT:
FIELD OF THE INVENTION
The disclosed invention is about a longitudinal cutter. More particularly, the present invention is directed towards a longitudinal cutter for segmenting a tire belt ply before assembling a tire comprising a segmented belt package and a method of building such a tire.
BACKGROUND OF THE INVENTION
Conventional pneumatic belted radial tires include at least two annular layers or plies of parallel cords, woven or unwoven, underlying the tread. The belt plies are arranged so that the left and right cords are inclined at angles of 15° to 30° with respect to the equatorial plane of the tire, most typically are arranged at angles between 17° and 27°.
When building tires, it is known that the various rubberized fabrics or rubberized cord material must be cut to prepare the material prior to being incorporated into the tire being built. The various uses of such cutters includes trimming the edges of the material or transversely cutting the material to the necessary length.
SUMMARY OF THE INVENTION
The present invention is directed towards a method of building a tire having at least one cord reinforced belt ply. The method is comprised of layering various tire components on a tire building drum. Prior to placing the at least one belt ply on the building drum, the at least one belt ply is longitudinally cut, forming a plurality of belt ply segments. The belt ply segments are placed onto the building drum and the cords in each belt ply segment of each belt ply are oriented in the same direction.
In another aspect of the invention, the tire being built has at least two belt plies. Both belt plies are longitudinally cut prior to placement of the belt plies on the building drum to form a plurality of belt ply segments. The cords in the belt ply segments of each belt ply are oriented in opposite directions relative to the belt ply segments of the adjacent belt plies.
Also disclosed is a longitudinal cutter for dividing a continuous belt ply into a plurality of belt ply segments. The cutter has at least a pair of shear cutters and a cutting surface against which the shear cutters rotate to cut the continuous belt ply. The shear cutters are mounted on a rail and are moveable along the length of the rail.
In another aspect of the longitudinal cutter, the cutting surface is a base plate and at least one cutting bar mounted on the base plate against which the shear cutters rotate.
In another aspect of the longitudinal cutter, the base plate forming the cutting surface has a plurality of grooves. The cutting bar have at least one tang on the base of the bar which interlocks with the grooves of the base plate to secure the cutting bar to the base plate.
REFERENCES:
patent: 4741235 (1988-05-01), Price
patent: 4745957 (1988-05-01), Sumner
patent: 4832243 (1989-05-01), Usami
patent: 4860620 (1989-08-01), Pizzorno
patent: 4934429 (1990-06-01), Koseki et al.
patent: 5252156 (1993-10-01), Glinz
patent: 5327353 (1994-07-01), Nagano
patent: 5795417 (1998-08-01), Damke et al.
patent: 0 794 049 (1997-09-01), None
patent: 08300511 (1996-11-01), None
Johnstone Adrienne C.
Krawczyk Nancy T.
The Goodyear Tire & Rubber Company
LandOfFree
Method of building a tire having a segmented belt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of building a tire having a segmented belt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of building a tire having a segmented belt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2823616