Patents by Inventor Yoshihiro Sasa

Yoshihiro Sasa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for controlling the thickness of pavement and setting the conditions for automatic control of the leveling machine
    Patent number: 5393167
    Abstract: A measuring arm (12) is attached to a frame (5a) supporting a screed (5). Height sensors (13) and (14) are attached to the measuring arm (12), and a height sensor (19) is also attached to the arm (18) of the screed (5). The spacing must remain constant between the rear end of the screed (5) and the height sensor (19), between the height sensor (19) and the height sensor (14), and between the height sensor (14) and the height sensor (13). A distance sensor to calculate the travel distance is provided on the tractor unit (1). The relative height Ho of both height sensors (13) and (14) to the screed (5) must always remain constant, regardless of the tilt of the screed (5) and the measuring arm (12). The sensors (13), and (14), and (17) are connected to the arithmetic unit (30). The height sensor (19) is connected to the arithmetic unit (40). The arithmetic unit (30) receives an output signal from the height sensors (13) and (14) and calculates the thickness of the pavement.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: February 28, 1995
    Assignees: Niigata Engineering Co., Ltd., Nippon Hodo Co., Ltd.
    Inventors: Makio Fujita, Fumio Goto, Tetsuo Ogawa, Akio Ishii, Tomohiro Gocho, Narimasa Yamabe, Ichiro Miyazaki, Masaaki Saito, Yoshihiro Sasa