E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
94/12
E02D 29/14 (2006.01) E02D 29/12 (2006.01)
Patent
CA 1047816
A B S T R A C T A manhole closure assembly prevents storm water from entering into manhole opening. A separate support ring for the assembly has a lower closure supporting flange with an upper flange spaced therefrom, and sealing material is provided on lower flange. The closure assembly includes a substantially circular cover plate engaging sealing material, and the cover plate comprises a pair of semi-circular segments. Structure is provided for holding semi-circular segments of the cover plate together at diametral edge portions thereof. Spaced apart biasing structure is located along arcuate edge portions of the cover plate, and such structure extends between plate and upper flange of support ring for urging plate against sealing material. When pressure force acting upon underside of the cover plate exceeds force of biasing structure, arcuate edge portions of the cover plate lift away from sealing material to relieve such pressure force.
234835
Campagna Benjamin J.
Campagna Samuel A. (jr.)
Campagna Benjamin J.
Campagna Samuel A. (jr.)
LandOfFree
Combination manhole closure assembly and separate support ring does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combination manhole closure assembly and separate support ring, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combination manhole closure assembly and separate support ring will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-296902