Static structures (e.g. – buildings) – Assembled in situ-type anchor or tie
Patent
1974-04-22
1976-08-17
Purser, Ernest R.
Static structures (e.g., buildings)
Assembled in situ-type anchor or tie
249177, 182 92, E04G 1504, E04G 504
Patent
active
039746151
ABSTRACT:
Method and apparatus for forming steps in manhole structures. Manhole assembly is comprised of pre-cast concrete sections. Each such section is formed in an appropriate mold typically comprised of inner and outer mold shells. The inner shell is provided with pairs of openings arranged in a predetermined fashion. Plastic core members are snap fittingly inserted into the openings and are provided with resilient pairs of flanges which cooperate with the marginal edges of each opening to retain the core in proper position and alignment. The concrete is placed in the mold. One set and cured, the section is removed from the mold. The plastic core members are snapped free from their locked position with the mold inner shell and remain as an integral part of the cured section. U-shaped stepped sections are force fittingly inserted into the cores which serve to retain each step member in position.
REFERENCES:
patent: 1482565 (1924-02-01), Johnson et al.
patent: 1859779 (1932-05-01), Lee
patent: 1987035 (1935-01-01), Tideman
patent: 2007689 (1935-07-01), Merrill
patent: 2340988 (1944-02-01), Ryder
patent: 2424757 (1947-07-01), Klumpp
patent: 2857754 (1958-10-01), Reinert
patent: 2930505 (1960-03-01), Meyer
patent: 3200903 (1965-08-01), Marino
patent: 3265349 (1966-08-01), Hamrick
patent: 3299984 (1967-01-01), Suedahl
patent: 3346230 (1967-10-01), Tolf
patent: 3374859 (1968-03-01), Dobert
patent: 3418781 (1968-12-01), Penote
A-Lok Corporation
Purser Ernest R.
Ridgill, Jr. James L.
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