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11. 发明授权

US5156257A Woodworking machine, such as a traversing sanding machine 失效
标题翻译：木工机械，如搬运砂光机
公开(公告)号：US5156257A
公开(公告)日：1992-10-20
申请号：US699179
申请日：1991-05-13
申请人： Keld O. Hundebol
发明人： Keld O. Hundebol
IPC分类号： B24B7/28 , B24B21/04 , B24B41/06 , B27C1/14
CPC分类号： B24B21/04 , B24B41/068
摘要： A woodworking machine of the traversing type for carrying items (23) on a vacuum conveyor belt (3) is provided with a number of compressed air nozzles (10) which direct a stream of air towards the items (23) on the belt, the nozzles (10), being connected to the pressure side (9) of air pumps (6), and the suction of the conveyor (3) is connected to the pump's inlet sides (8). A reduction in the friction of the belt (13) as well as the wear on its supporting plate (18), is obtained by the formation of eddy currents in grooves (20), formed in the belt supporting plate (18) through which the air is sucked.

12. 发明授权

US4967513A Belt sanding machine 失效
标题翻译：砂带砂光机
公开(公告)号：US4967513A
公开(公告)日：1990-11-06
申请号：US299943
申请日：1989-01-11
申请人： Keld O. Hundebol
发明人： Keld O. Hundebol
IPC分类号： B24B19/24 , B24B21/12 , B24B21/16
CPC分类号： B24B21/16
摘要： When sanding for instance panelled doors in a belt sanding machine it must be prevented that transversely extending parts (16) are sanded since it would be harmful to sand across the direction of the grain of the wood. A machine according to the invention is therefore provided with a combined sensing and control device which in a simple and effective manner will prevent damage caused by the sanding process by controlling the contact of the sanding belt with the workpiece. The device consists of a disc (14, 20) which is mounted on the sanding equipment. The disc (14, 20) protrudes a distance beyond the sanding position of the sanding belt (15), in order that the disc will sense the workpiece when the workpiece is moved under the sanding belt. When the disc (14, 20) rolls across a frame piece (16) the sanding belt (15) is pivoted up above the wood, and when the disc (14, 20) meets a recessed part (18), the sanding belt (15) is pivoted to a non-sanding position.

13. 再颁专利

USRE32575E Hand grinder and valve therefore 失效
标题翻译：手磨机和阀门因此
公开(公告)号：USRE32575E
公开(公告)日：1988-01-12
申请号：US893389
申请日：1986-08-05
申请人： Keld O. Hundebol
发明人： Keld O. Hundebol
IPC分类号： B24B23/00 , B24B15/00 , B24B23/02 , B25F5/00 , F16K1/00 , F16K1/04 , F16K1/12 , F16K21/04 , F16K31/528 , F16P3/22
CPC分类号： F16K1/12 , B24B15/00 , B24B23/026 , B25F5/00 , F16P3/22
摘要： To be able to control the admission of compressed air or liquid to a machine in a hand tool, the working medium can be admitted to the machine through a handle with a built-in valve. By turning the handle (1) the valve opens or closes. The valve body itself (7,9) is secured to a stay in the form of a bolt (10) and a pipe (8) screwed into the bottom of the handle casing (1), whereas the valve seat (14) is formed as a recess in a bushing (2) being stationary relative to the casing. The handle has an oblique track (4) wherein a bolt (3) secured in the bushing moves the casing (1) and thereby the valve body relative to the bushing (2) when the handle is turned. When the handle is released in the open position of the valve (FIG. 3), the pressure exerted by the medium will move the casing so as to close the valve since the area of the casing is larger than that of the bush (2). The machine can thereby be safely and reliably disconnected by releasing the hold on the handle. The valve can be used for a hand grinder with a U-shaped handle pipe with handle ends and a hollow spindle situated between the handle ends, an air machine being arranged in the spindle. The spindle has a number of slotted grinding discs, and a pressure medium is admitted to the machine through passages in the handle pipe. A simple and reliable hand grinder which can efficiently grind deep profiles is thereby obtained.

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