The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 1996
Filed:
Apr. 06, 1994
Hachiro Ikeda, Tagajo, JP;
Noriaki Miyamoto, Tagajo, JP;
Ryoei Umeda, Tokyo, JP;
Hidenori Yasu, Kadoma, JP;
Mitsuo Fukukawa, Tokyo, JP;
Yukiei Masuyama, Tokyo, JP;
Shoji Kinoshita, Kounosu, JP;
Yukio Takagi, Tokyo, JP;
Tomohiro Gocho, Omiya, JP;
Fumio Goto, Gunma, JP;
Akio Ishii, Gunma-gun, JP;
Tetsuo Ogawa, Gunma-gun, JP;
Yoshun Hasegawa, Yokohama, JP;
Keitaro Hironaka, Yokohama, JP;
Yasuhiro Ogoshi, Yokohama, JP;
Niigata Engineering Co. Ltd., Tokyo, JP;
Abstract
An automatic steering device is presented for controlling the direction of travel of an asphalt finisher during a paving operation. The device is provided with a laser generator (18) which projects a laser beam of a slit shape on a series of objects along the roadside which is selected to served as a reference line (A). An image recording device (17), a CCD camera, is disposed on the vehicle member (2), which records the projected laser light illuminating the objects and outputs a generated image (Ba) to a master controller (22). The master controller (22) determines the current deviation of the vehicle member (2) from the reference line (A) by the changes in the position of the generated image (Ba), and operates the automatic control device so as to steer the vehicle member (2) in the correct direction to permit the asphalt finisher to follow the reference line (A).