F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
248/17, 61/2.4
F16J 15/06 (2006.01) B28B 23/00 (2006.01) E03F 3/04 (2006.01) E03F 5/04 (2006.01)
Patent
CA 1229329
ABSTRACT OF THE DISCLOSURE This shaping element is designed to form a sewer pipe receiving opening during pouring of concrete to mound a manhole. The shaping element also holds a gasket seal in position until the concrete has set. The shaping element is made of two axially separable parts each having a flange to form part of the sewer pipe receiving opening. The inner end of one flange has an L- shaped extension defining a radially-inwardly-extending step and an axially-extending end portion, the inner end of the other part extends short of the step and overlaps the axial extension whereby there is formed a gasket seal receiving peripheral channel of L-shaped cross-section. The two parts are completely closed at their outer ends and are assembled by means of non- circular telescopic tubes at their center to maintain the same in a predetermined relative orientation.
504912
Gilbert Noel
Lesperance Pierre
LandOfFree
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