Apparatus for making concrete pipe

Details Apparatus for making concrete pipe Apparatus for making concrete pipe

1991-07-19

1993-07-20

Woo, Jay H.

Static molds

Having inflatable element

249100, 249144, B28B 2176

Patent

active

052290247

ABSTRACT:
The invention relates to seals on equipment used to make concrete pipe. Such equipment includes two generally vertical cylindrical surfaces, a core and a mold, with upper and lower end forming rings. The lower end forming ring, a pallet, has inner and outer vertical surfaces. Seals of the present invention are formed by using two hollow tubes of soft rubber. The tubes are housed in lower portions of the core and the mold so that they are in alignment with the inner and outer surfaces of the pallet. The tubes are pressurized into tight engagement with the pallet to prevent the outward flow of slurry from the space between the core and the mold.

REFERENCES:
patent: 2929124 (1960-03-01), James
patent: 2966713 (1961-01-01), Billner
patent: 3941347 (1976-03-01), Robertson et al.
patent: 4123033 (1978-10-01), Joelson
patent: 4437640 (1984-03-01), Heinzle

Affiliated with

Also associated with

Rating

Apparatus for making concrete pipe does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1758353