Lumber marking system
Patent 4392204 Issued on July 5, 1983. Estimated Expiration Date: 
December 1, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 1, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsApplicationNo. 06/211705 filed on 12/01/1980US Classes:700/227, Preparation of an article for an identification code (e.g., printing, encoding)101/18, Selective machines101/4, Special-article machines101/43, Feeding or delivering101/93.1, Fluid actuated or controlled print means144/329, PROCESS144/363, Cutting702/159, By reflected signal (e.g., ultrasonic, light, laser)702/172By radiant energy (e.g., X-ray, light)ExaminersPrimary: Wise, Edward J.Attorney, Agent or FirmInternational ClassesB44B 5/02 (20060101)B44B 5/00 (20060101) B27B 31/06 (20060101) B27B 31/00 (20060101) G01B 11/04 (20060101) AbstractA lumber marking system for accumulating information about pieces of lumber (e.g., boards), such as grade and volume information, and marking the end of each piece with a related code is disclosed. The boards (29) are moved by a chain/lug conveyor (11) past a series of stations. A pulse generator (45) coupled to the chain/lug conveyor (11) produces a pulse for each increment of conveyor movement. The boards (29) are moved past a console (43) where a viewing operator enters grade data. The boards also moved through a curtain or optical detectors (35), which determines in segments the maximum available length of each board. The boards also pass an optical width measuring system (47) that determines the width of each board by counting the number of pulses generated by the pulse generator (45) during the period of time that a light beam is broken by each board. The resulting grade, length and width data is collated and used to control the setting and actuation of an embossing mechanism (49) that embosses a related numerical code into the end of each board as the board reaches a position in alignment with the embossing mechanism.Other References
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