System and a method for detecting a malfunction in the operation

Details System and a method for detecting a malfunction in the operation System and a method for detecting a malfunction in the operation

1988-05-24

1990-05-08

Teska, Kevin J.

Boots, shoes, and leggings

29710, 29806, G06F 1546, G05B 902

Patent

active

049244191

ABSTRACT:
The system and method of the present invention senses the time that it takes an automatic machine to assemble two or more parts and compares that time against a know time for correctly assembled parts. If the sensed time varies from the known time the attempted part assembly is rejected. A linear signal transducer is coupled to an assembler portion of the automatic machine to provide a signal indicative of the time it takes for the assembler portion to traverse its assembly distance. The provided signal is compared against a predetermined threshold signal for purposes of determining a variance corresponding to a defect in the assembly process.

REFERENCES:
patent: 3136042 (1964-06-01), Horn et al.
patent: 3802051 (1974-04-01), Andler et al.
patent: 3802052 (1974-04-01), Andler
patent: 4115913 (1978-09-01), Moriya et al.
patent: 4656737 (1987-04-01), Shimizu et al.
patent: 4704693 (1987-11-01), Thomas
patent: 4706187 (1987-11-01), Arai et al.

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