Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Toroidal or annular female shaping means and coacting means...
Patent
1987-03-13
1988-06-07
Hart, Charles
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Toroidal or annular female shaping means and coacting means...
264501, 249122, 425429, 425535, B29C 4920
Patent
active
047493453
ABSTRACT:
A method of manufacturing a beadless flexible member for an airspring having a fully molded non-tubular shape. An axially segmented mold with tapered circular end bores is used with conically tapered end plugs which sealingly compress an uncured preform of the flexible member between the conical plugs and the tapered circular end bores. Compressed fluid is injected into the interior of the preform to radially expand it to the desired molded shape. At a rate determined by the radial expansion of the preform, the annular segments of the mold are axially moved together to accommodate the axial foreshortening of the preform during its radial expansion. After full axial closure of the mold, heat and pressure are applied to vulcanize the preform. The beadless, fully molded flexible member may be used for airsprings requiring zero pressure roll capability. Preferred forms of the flexible member have tapered wall thickness in the neck with circumferential indexing ribs for exact placement of compression rings on the finished airspring.
REFERENCES:
patent: 2980571 (1961-04-01), Mosshart et al.
patent: 3013920 (1961-12-01), Harris et al.
patent: 3030252 (1962-04-01), Edgerly et al.
patent: 3036180 (1962-05-01), Greenwood
patent: 3043582 (1962-07-01), Hirtrieiter
patent: 3130965 (1964-04-01), Niclas
patent: 3191964 (1965-06-01), Chambers
patent: 3319952 (1967-05-01), Travers
patent: 3554262 (1971-01-01), Swanson
patent: 3794538 (1974-02-01), Christie et al.
patent: 3870286 (1975-03-01), Willich
patent: 4378935 (1983-04-01), Brown et al.
patent: 4400342 (1983-08-01), Logan
patent: 4587074 (1986-05-01), De Loof
patent: 4666650 (1987-05-01), Canow
Safreed, Jr. Carl K.
Warmuth Ivan J.
Dion, Sr. M. R.
Hart Charles
The Goodyear Tire & Rubber Company
LandOfFree
Mold for airspring rubber membrane does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mold for airspring rubber membrane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mold for airspring rubber membrane will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-842242