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| Number | Title | Issue Date |
| 6964364 | Weld guidance system and method A method and guidance system for accurately positioning a welding torch relative to a desired weld path. The method and system are based on ultrasonic sensing of information relating to the distance between the welding torch and surfaces on one or more components be... | 11/15/2005 |
| 6938625 | Load sensing system A load sensing system for maximizing the cleaning efficiency of particulate raw materials such as sand, gravel, rock, ores, etc. in a log washer by sensing the weight of the aggregate in the log washer tank and adjusting the angle of inclination of the tank for clea... | 09/06/2005 |
| 6516843 | Method for defrosting logs and a defrosting apparatus The present invention concerns a method and an apparatus for defrosting frozen wood prior to debarking. The defrosting method of logs of the invention is based on bringing heat zone-specifically to logs in transfer motion on a conveyor according to their ... | 02/11/2003 |
| 5868186 | Debarking wood without introducing contaminants into the wood This invention relates to a wood chip recovery system which removes bark from roundwood or wood chips. It is desirable for such structures of this type to recover the wood chips from the bark without introducing contaminants, such as metal ions like iron,... | 02/09/1999 |
| 5791388 | Method for controlling the feed of backup rolls in a veneer lathe and a backup roll apparatus in a veneer A method of controlling the feed of the backup rolls of a log backup apparatus for use in a veneer lathe for preventing a log from bowing while veneer is peeled from the log. The method comprises the step of centripetally feeding the backup rolls from a c... | 08/11/1998 |
| 5538056 | Log conditioning before mechanical debarking High powered lasers are used to score the bark on logs before they are mechanically debarked. Typical of the lasers employed are multi-kilowatt CO2 industrial lasers. A high powered laser beam is brought to a focus just above the surface of the... | 07/23/1996 |
| 5518921 | Biological control for wood products and debarking Fungi which grow white/colorless and reduce pitch are used to protect structural wood before or after cutting from logs against color staining by staining fungi. The fungus Phanerochaete gigantea is also useful to facilitate debarking.... | 05/21/1996 |
| 5505240 | Method and apparatus for the treatment of logs An apparatus and method for the hot water treatment of debarked logs to eliminate infestation and fungi in the logs is presented. The present invention utilizes a water tank and a heat generation source to raise the temperature of the center of the logs a... | 04/09/1996 |
| 5197524 | Apparatus and method for feeding steam into the hollow longitudinal staves of a debarking drum A steam distributing valve in contact with the log feed end of a rotatable debarking drum is supported in such a manner that it is capable of moving slightly parallel to the drum axis in response to axial displacement of the drum. Full contact between the... | 03/30/1993 |
| 5103883 | Method for the debarking of logs A method for the debarking of logs is disclosed, which comprises treating the logs with enzymes to weaken the bonds between the bark and wood. An apparatus is also disclosed for the debarking of logs, comprising a conveyor for conveying the logs to a deba... | 04/14/1992 |
| 5083594 | Delimber boom An improved boom construction on a tree delimber. The boom construction has a boom support and a boom assembly pivotally connected to the boom support. Locking means are provided for locking the boom assembly to the boom support in a working position of t... | 01/28/1992 |
| 4944338 | Barking method, and an apparatus for utilization of the method A barking method, and an apparatus for utilization of the method, wherein a log (6) during a substantially linear feeding movement is brought to pass one or a number of barking devices (1; 4,4'), arranged to perform a surrounding rotary movement in relati... | 07/31/1990 |
| 4805678 | Method and apparatus for pretreating and debarking logs An apparatus for pretreating and debarking logs wherein the log is debarked by a plurality of cutting elements disposed at an angle to the longitudinal extent of the log and offset with respect to each other. The cutting elements include top and bottom cu... | 02/21/1989 |
| 4784197 | Barking drum and method of heating same For supplying pressurized steam into a rotating barking drum during the barking of tree trunks in order to thaw and warm the bark, steam is supplied into the barking drum from the periphery of the drum in a substantially radial direction through a distrib... | 11/15/1988 |
| 4432403 | Procedure and apparatus for barking timber A procedure and an apparatus for barking timber, wherein the timber is barked by the frictional barking method, and it is pretreated prior to barking in order to render the friction barking more efficient. In the pretreatment the timber is patched, that i... | 02/21/1984 |
| 4148346 | Method of and apparatus for drying and debarking logs A method of and apparatus for removing bark from a log or cant. The cant is fed via an infeed section which eliminates limbs to a two-stage drier section in which a radial frequency generator with plate electrodes creates an electrical field in the cant t... | 04/10/1979 |
| 3981338 | Method of making a compressed wood panel from peeled logs A method of making a compressed wood product such as a building panel from raw wood. Tree length logs are cut to convenient lengths, debarked and dried, and then placed in a mold where they are immersed in suitable liquid adhesive and compressed to a dime... | 09/21/1976 |
