Method for extracting a mounted anchor bolt and anchor bolt extr

Details Method for extracting a mounted anchor bolt and anchor bolt extr Method for extracting a mounted anchor bolt and anchor bolt extr

1974-11-04

1976-07-27

Jones, Jr., James L.

Metal working

Method of mechanical manufacture

Shaping mating parts for reassembly in different positions

B23P 1902

Patent

active

039711218

ABSTRACT:
A method for extracting a mounted anchor bolt secured within an anchor bolt mounting cavity in a mounting member, said method comprising inserting into a central opening of a central cylindrical hole in the anchor bolt an anchor bolt extractor tool and screwing into said anchor bolt said tool thereby releasing the anchor bolt from a conical wedge engaging a bottom portion of the anchor bolt within the mounting cavity and thereafter lifting the anchor bolt from said cavity. The anchor bolt extractor tool comprises a rod having an external tool connecting means end and adjacent thereto a screw threaded portion, having threads matable with anchor bolt screw threads located on an upper portion of an internal wall of said anchor bolt defining said cylindrical hole therein, said rod further having adjacent to said threaded portion thereof an un-threaded shank portion having a diameter smaller than that of said central cylindrical anchor bolt hole and having a length greater than a depth of said cylindrical hole from an internal termination of anchor bolt screw threads to the bottom portion of said anchor bolt, said shank length being less than a depth of said anchor bolt cylindrical hole, said shank portion terminating in an anchor bolt conical wedge abutment end.

REFERENCES:
patent: 2220376 (1940-11-01), Mackal
patent: 2976069 (1961-03-01), Meredith
patent: 3200692 (1965-08-01), Catlin
patent: 3279301 (1966-10-01), Fischer
patent: 3748718 (1973-07-01), Russeu
patent: 3841771 (1974-10-01), Shankwitz et al.

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