Composite article

Details Composite article Composite article

1984-11-21

1987-05-05

Leppink, James A.

Road structure, process, or apparatus

Pavement

Vault cover-closure

428117, 428178, 52 20, 5230911, 52799, E02D 2914

Patent

active

046627774

ABSTRACT:
A composite cover 10 for a manhole or other opening comprises an upper 12 and lower 14 skin of glass reinforced plastics material. The upper and lower skins are bonded to one another about the edges 18 and spaced apart from one another therebetween to define a space 16 containing reinforcing walls 20 extending between the upper 12 and lower 14 skins. The reinforcing walls 20 are preferably formed from a corrugated sheet of glass fibre reinforced plastics material. The cover of the invention is as strong as conventional cast iron covers but is lighter and cheaper to manufacture.

REFERENCES:
patent: 2970347 (1961-02-01), Massopust
patent: 3544417 (1970-12-01), Corzine
patent: 3672103 (1972-06-01), Kost
patent: 3920347 (1975-11-01), Sauriol et al.
patent: 3974599 (1976-08-01), Grosh
Fothergill Engineered Fabrics Ltd., "Preliminary Product Data on Admesh (M924), Nov. 1984".
Dr. Ing. R. Kleinholz et al., "Moulding with Mat Pre-Forms," Vetrotex Fiberworld No. 20, Jul. 1985.
British Standards Institution, "Specification for Manhole Covers, Road Gully Gratings and Frames for Drainage Purposes," BS 497:Part 1:1976.

Affiliated with

Also associated with

Rating

Composite article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite article will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2396409