Boots – shoes – and leggings
Patent
1997-02-12
1999-12-14
Elmore, Reba I.
Boots, shoes, and leggings
36447502, 36447505, 36447507, 36447508, 3644751, 425137, 425143, 264 403, 264 406, 2643281, 26432814, B29C 3900, B29C 4500, B29C 704, B29B 700
Patent
active
060008318
ABSTRACT:
The present invention relates to injection mold hot runner control devices and more particularly to an injection molding control device which eliminates the conventional control cables to improve the quality of feedback signals received by the controller and the safety of the environment in which such systems are used. The present invention utilizes a signal processor to convert analog signals received from the mold temperature sensors into a digital feedback signal in the vicinity of the mold and to transmit such feedback signal to a receiver connected to a controller at a location remote from the mold. The mold controller processes the feedback signal and generates a corresponding control signal. The control signal is transmitted from the remotely located controller to the controlled device, typically the mold heaters. A single controller and a single mold signal processor may be used to be able to control numerous molds by utilizing signals on different lines or frequencies or in other means of signal differentiation known to those skilled in the art. The system of the present invention enables the injection mold user to eliminate the numerous problems, difficulties and repair costs of the prior art as well as enabling the user to gain an improved feedback loop that was not feasible under control systems of the prior art.
REFERENCES:
patent: 4826418 (1989-05-01), Kamiguchi
patent: 4899288 (1990-02-01), Tsutsumi
patent: 5316707 (1994-05-01), Stanciu et al.
patent: 5456870 (1995-10-01), Bulgrin
American MSI Corporation
Elmore Reba I.
Natnithithadha Nayin
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