Plant husbandry – Mushroom culture
Patent
1990-01-16
1991-08-20
Locker, Howard J.
Plant husbandry
Mushroom culture
47 18, 47 39, 47 66, 206505, 206507, 206509, 206557, 220500, 220501, 220529, A01G 104, A01G 900, C10L 118
Patent
active
050403281
ABSTRACT:
A mushroom tray comprising a tray portion having opposing sidewalls, opposing end walls and a substantially flat bottom sheet having a parallity of channels formed therein and extending therealong, corrosion-resistant I-beams positioned within the channels for strengthening and stiffening the bottom sheet, and a parallity of clips for securing the I-beams to the underside of the bottom sheet. In a preferred embodiment, the trays include downwardly projecting legs which are shaped enable the trays to be stacked vertically. Also in the preferred embodiment, the trays are made of a polyolefin and the I-beams are made of aluminum. The end walls also preferably include I-beams for re-enforcement; the I-beams are totally enclosed in the end wall structure to minimize exposure to a corrosive atmosphere.
REFERENCES:
patent: 3118249 (1964-01-01), Bard et al.
patent: 3842534 (1974-10-01), Walters et al.
patent: 3935673 (1976-02-01), Robins
patent: 3992808 (1976-11-01), Stengel
patent: 4001966 (1977-01-01), Metzner
patent: 4226047 (1980-10-01), Maaijwee
patent: 4329813 (1982-05-01), Halttula
patent: 4924623 (1990-05-01), van Rens
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