Apparatus and method for reinforcing cast structures

Static structures (e.g. – buildings) – Opaque stonelike module – Elongated reinforcing


Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0


526491, 526493, 526498, 52660, 52662, 52664, 527221, 138153, 138175, 264 35, 405124, E21D 1110




A rectangular reinforcing cage is provided for a cast concrete structure having longitudinal registration tubes at each corner of the cage. An outer reinforcing cage surrounds the registration tubes and a coaxial inner reinforcing cage is supported from the outer cage by a plurality of spacers. Each reinforcing cage has a pair of facing C-shaped mats having straight mats overlapping and connected to the bent ends of the "C" to complete each reinforcing cage. Each end of the C-shaped mats have a smoothly curved transition bend joining a portion perpendicular to the main portion of the mat. Each mat has a layer of longitudinal wires connected to a layer of transverse wires. The longitudinal wires being more closely spaced near the end of each mat than in the remainder of the mat with no longitudinal wires in the transition bend of each C-shaped mat. The longitudinal wires are positioned inside each C-shaped mat and outside each straight mat when a reinforcing cage is assembled. Each reinforcing cage including each mat and each C-shaped mat is shaped to close tolerances for producing consistent cast reinforced concrete structures. A jig for manufacturing the reinforcing cages is disclosed as well as the method for assembling the reinforcing cages and cast concrete structures including the reinforcing cages.

patent: 342280 (1886-05-01), Burdick
patent: 912318 (1909-02-01), McMahon
patent: 1120471 (1914-12-01), Franklin
patent: 1144200 (1915-06-01), Hewett
patent: 1163853 (1915-12-01), Randall et al.
patent: 1254153 (1918-01-01), Nelson
patent: 1271708 (1918-07-01), Horstman
patent: 1441736 (1923-01-01), Metzsch
patent: 1443162 (1923-01-01), Bent
patent: 1501850 (1924-07-01), Karstens et al.
patent: 1554767 (1925-09-01), Southern
patent: 1579285 (1926-04-01), Danaher et al.
patent: 1670625 (1928-05-01), Johannesson
patent: 1765664 (1930-06-01), Flath
patent: 1774664 (1930-09-01), Parmley
patent: 1950343 (1934-03-01), White
patent: 2005699 (1935-06-01), Gottwald
patent: 2042132 (1936-05-01), Treskow
patent: 2488245 (1949-11-01), Smith
patent: 2732230 (1956-01-01), Risley et al.
patent: 3300938 (1967-01-01), Schyndel et al.
patent: 3333388 (1967-08-01), Sandin
patent: 3402559 (1968-09-01), Fukushima
patent: 3419047 (1968-12-01), Osweiler
patent: 3471986 (1969-10-01), Swenson
patent: 3667581 (1972-07-01), Breitfuss
patent: 3726950 (1973-04-01), Turzillo
patent: 3791092 (1974-02-01), Schmitter
patent: 4026582 (1977-05-01), Abe et al.
patent: 4047388 (1977-09-01), Howlett
patent: 4070848 (1978-01-01), Lingle
patent: 4117872 (1978-10-01), Gott et al.
patent: 4199158 (1980-04-01), de Munck
patent: 4496259 (1985-01-01), Foucher
patent: 4497590 (1985-04-01), Chase
patent: 4539787 (1985-09-01), Ritter et al.
patent: 4606671 (1986-08-01), Rasmussen
patent: 4667452 (1987-05-01), Dick et al.
patent: 4689867 (1987-09-01), Tolliver
patent: 4693635 (1987-09-01), Matiere
patent: 4744190 (1988-05-01), Couwenbergs et al.
patent: 4781006 (1988-11-01), Haynes
patent: 4830536 (1989-05-01), Birch et al.
patent: 4854775 (1989-08-01), Lockwood
patent: 4900607 (1990-02-01), Glang et al.
patent: 4930677 (1990-06-01), Jolliffee
patent: 5118218 (1992-06-01), Musser et al.
Exhibit A includes pp. 14-29 and 33 from the Mar. 1992 issue of National Underground Construction Association (NUCA) magazine, including articles disclosing various technologies concerning trenchless excavation construction methods, including jacking and related matters.
Exhibit B is an article entitled "NUCA Microtunnelling Pipe Standards Task Group, Concrete Pipe Section" published Feb. 23, 1993, which includes a specification for reinforced concrete pipe and discloses compressible bearing strips.


Say what you really think

Search for the USA inventors and patents. Rate them and share your experience with other people.


Apparatus and method for reinforcing cast structures 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 and method for reinforcing cast structures, we encourage you to share that experience with our community. Your opinion is very important and Apparatus and method for reinforcing cast structures will most certainly appreciate the feedback.

Rate now


Profile ID: LFUS-PAI-O-151957

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.