Marker screw cap

Details Marker screw cap Marker screw cap

1989-12-05

1991-04-02

Ridgill, Jr., James L.

Static structures (e.g., buildings)

With indicia

138104, 138 96R, 52221, 116209, 285 93, E04B 100, F16L 5500

Patent

active

050037358

ABSTRACT:
A device for locating a marker screw threadably engaged with a cover in duct means imbedded in a poured concrete wall construction including resilient fibers that are attached to the marker screw at one end and project beyond the outer wall surface but resiliently yield upon engaging with a finishing tool thus facilitating location of said marker screw after the wall has been poured.

REFERENCES:
patent: 966086 (1910-08-01), Faile
patent: 1956879 (1934-05-01), Sharp
patent: 2210441 (1940-08-01), Bachman
patent: 2764886 (1956-10-01), Wiesmann
patent: 2975559 (1961-03-01), Hedgren
patent: 3030256 (1962-04-01), Rosenthal
patent: 3166631 (1965-01-01), Reiland
patent: 3373535 (1968-03-01), Lankes
patent: 4915055 (1990-04-01), Ptashinski

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