Static structures (e.g. – buildings) – Specified wear or friction-type traffic-carrying surface – Perforate structure having twisted element or particular...
Patent
1987-08-04
1988-12-20
Murtagh, John E.
Static structures (e.g., buildings)
Specified wear or friction-type traffic-carrying surface
Perforate structure having twisted element or particular...
52581, 52660, 52262, 553852, E04C 242
Patent
active
047917636
ABSTRACT:
A panel for a raised floor of a clean room, such as for a semiconductor manufacturing facility, comprises tubes (2) whose open ends (3) are slipped over respective spacers (4) of spacer bars (5), providing cross-connection and support for said tubes (2). No welding or adhesives are needed. The size of the panel can be conveniently changed or adapted in the plant or in the field.
REFERENCES:
patent: 1544914 (1925-07-01), Larsen
patent: 3862464 (1975-01-01), Arens
patent: 3986850 (1976-10-01), Wilcox
patent: 4135339 (1979-01-01), Pawlitschek
patent: 4244768 (1981-01-01), Wiechowski
patent: 4320719 (1982-03-01), Clemmensen
patent: 4484250 (1984-11-01), Rzepecki
patent: 4516377 (1985-05-01), Feller
patent: 4628662 (1986-12-01), Nooyen
patent: 4712340 (1987-12-01), Sogge
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