Thermograph with removable cartridge

Recorders – Combined with external recorder operating means – Well logging

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Details

733435, 206305, 206523, G01D 910, G01K 570, B65D 8538

Patent

active

039710351

ABSTRACT:
A time temperature recording device especially adapted to the business of transporting perishables and characterized by a preloaded returnable instrument of permanent nature packaged in a protective liner held secure and warranted by a sealed box that is expendible, with separate access openings for exclusive use of shipper and receiver respectively, and wherein a logic means permits depression of a stylus onto a pressure sensitive chart when instrument operation is started by the shipper, and lifts said stylus and releases said chart when stopped by the receiver. The used instrument is especially adapted to be returned by the Postal Service.

REFERENCES:
patent: 2516124 (1950-07-01), Kishibay
patent: 2937820 (1960-05-01), Wilson
patent: 3138100 (1964-06-01), Peschko
patent: 3157303 (1964-11-01), Siegel
patent: 3204385 (1965-09-01), De Remer et al.
patent: 3251460 (1966-05-01), Edmonds
patent: 3404945 (1968-10-01), Barter et al.
patent: 3436967 (1969-04-01), Post
patent: 3520769 (1970-07-01), Baker
patent: 3540284 (1970-11-01), Sellers et al.
patent: 3787885 (1974-01-01), Johnson
patent: 3848735 (1974-11-01), McGee et al.
patent: 3868697 (1975-02-01), Schefe

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