Abstract: A sealing gasket and oval concrete pipe combination and method of producing the concrete pipe joint to improve the seal of the concrete pipe joint cooperatively formed between adjacent oval concrete pipes wherein the sealing gasket comprises a retainer element disposed to engage one of the adjacent oval concrete pipes to maintain the position of the sealing gasket relative to the adjacent oval concrete pipes during assembly of adjacent oval concrete pipes, a base member to aid in the alignment of adjacent oval concrete pipes during assembly and cushion adjacent portions of adjacent oval concrete pipes and a sealing element to seal the joint between adjacent oval concrete pipes and wherein each oval concrete pipe comprises a male and female joint member formed on opposite ends thereof to operatively engage the corresponding joint member formed on the next adjacent oval concrete pipe to form the joint therebetween, the male and female joint members including corresponding shaped portions to facilitate alignment

Abstract: A method and apparatus for the production of a symmetrical oval concrete pipe including an oval male joint member and an oval female joint member formed on opposite ends of an oval pipe body including an outer jacket and an inner core disposed in spaced relationship relative to each other to form the oval pipe body therebetween; an upper pallet and a lower pallet configured to form the oval male joint member and the oval female joint member respectively, and a pallet positioning structure configured to engage the upper pallet and the lower pallet to operatively position the upper pallet and lower pallet relative to the outer jacket and inner core such that corresponding points on the upper pallet and the lower pallet are aligned relative to each other whereby corresponding points of the oval male joint member and the female joint member are aligned relative to each other.

Abstract: A header pallet for the manufacture of the spigot of a concrete pipe to receive a sealing gasket during assembly of a pipe line including an outer header ring having an end leg portion and a side leg portion to cooperatively form a substantially L-shaped profile wherein the intersection of the inner surface of the end leg portion and the inner surface of the side leg portion are contoured to form a concave surface and a shoulder is formed on the inner surface of the side leg portion in spaced relationship relative to the concave surface, a removable compressible intermediate ring having a substantially arcuate profile including an outer convex surface, and a removable inner snap ring having a substantially rectilinear profile such that the removable inner snap ring is placed to engage the shoulder in spaced relationship relative to the end leg portion and the removable compressible intermediate ring is press fitted between the removable inner snap ring and the end leg portion with the outer convex surface the

Abstract: An apparatus for the production of a symmetrical oval concrete pipe including an oval male joint member and an oval female joint member formed on opposite ends of an oval pipe body having a form including an outer jacket and an inner core disposed in spaced relationship relative to each other to form the oval pipe body therebetween; an upper pallet and a lower pallet configured to form the oval male joint member and the oval female joint member respectively, and a pallet positioning structure configured to engage the upper pallet and the lower pallet to operatively position the upper pallet and lower pallet relative to the outer jacket and inner core such that corresponding points on the upper pallet and the lower pallet are aligned relative to each other whereby corresponding points of the oval male joint member and the female joint member are aligned relative to each other.

Abstract: A dual seal gasket specifically configured to seal the joint between adjacent concrete pipes comprising an annular substantially resilient member including a first retainer element engaging disposed on the outer surface of one of the adjacent concrete pipes having its longitudinal axis substantially parallel to the longitudinal axis of the adjacent concrete pipes, a first sealing element including an upper and lower enlarged truncated compressible members interconnected by a reduced intermediate member extending inwardly from the first retainer element and substantially perpendicular thereto and a second sealing element including a compressible body having a pair of compressible finger members extending outwardly therefrom in a substantially V-shaped configuration having its longitudinal axis substantially parallel to the longitudinal axis of the first retainer element and substantially perpendicular to the longitudinal axis of the first sealing element such that as the adjacent concrete pipes are placed in o