Screw fixing device for structural units of agglomerated materia

Details Screw fixing device for structural units of agglomerated materia Screw fixing device for structural units of agglomerated materia

1976-06-24

1978-04-25

Frazier, Roy D.

Brushing, scrubbing, and general cleaning

151 417, F16B 3704

Patent

active

040856526

ABSTRACT:
A screw fixing device for a structural member of agglomerated material, e.g. of plaster or concrete, comprising a member for accomodating the screw integrated to said structural member at the moment of manufacturing the latter, characterized in that said member is constituted by an anchoring sheath of plastic material, adapted to insulate the screw completely from the remaining portions of said member.

REFERENCES:
patent: 808401 (1905-12-01), Percival
patent: 1057975 (1913-04-01), Newhall et al.
patent: 1138219 (1915-05-01), Hottenroth
patent: 1168770 (1916-01-01), Wagner
patent: 1570234 (1926-01-01), Feldmar
patent: 2573498 (1951-10-01), Scott
patent: 2718485 (1955-09-01), Samuely
patent: 3434261 (1969-03-01), Rohe
patent: 3621557 (1971-11-01), Cushman et al.
patent: 3783921 (1974-01-01), Wagner
patent: 3897713 (1975-08-01), Gugle

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