Static structures (e.g. – buildings) – Shaped or strengthened by fluid pressure – Fluid pressure is subatmospheric
Patent
1989-05-09
1990-05-29
Murtagh, John E.
Static structures (e.g., buildings)
Shaped or strengthened by fluid pressure
Fluid pressure is subatmospheric
E04H 1520
Patent
active
049284428
ABSTRACT:
An improvement in inflatable tents includes a mattress element that has a manifold system for inflating that mattress element and fluid check valves that co-operate with fluid check valves on various accessory items to inflate such accessory items via the mattress manifold system. Attaching means are located on the mattress element and on the accessories to releasably couple various accessory items to the mattress element. The mattress thus can be used as a raft, as a bottom to various types of tents and the like.
REFERENCES:
patent: 3008214 (1961-11-01), Foster et al.
patent: 3055379 (1962-09-01), Fink
patent: 3415719 (1968-12-01), Telkes
patent: 4000585 (1977-01-01), Denaro
patent: 4197681 (1980-04-01), Holcombe
patent: 4271642 (1981-06-01), Karr
patent: 4558543 (1985-12-01), Kitamura et al.
patent: 4631873 (1986-12-01), Parish
Fitzpatrick Colleen
Kroetch Keith
Gernstein Terry M.
Mai Lan
Murtagh John E.
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