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:
Jan. 02, 1996
Filed:
Aug. 05, 1993
Kenzaburou Iijima, Hamamatsu, JP;
Katsufumi Kondo, Hamamatsu, JP;
Katsuhiko Masuda, Hamamatsu, JP;
Kouji Yataka, Hamamatsu, JP;
Yasuyuki Chujo, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
The initial movement of a spherical body is detected by detecting the intersection with a light beam emitted from trigger light illuminating portion 2 to trigger light-receiving portion 3, and as a result, measurement of time by an arithmetic processing unit is started. During flight, spherical body 1 intersects light beams emitted from surface velocity sensors 4 and 5, the reflected light therein is detected by these surface velocity sensors 4 and 5, and the surface velocity of spherical body 1 is then measured. Spherical body 1 continues in flight and intersects at least two light beams irradiated from multi-beam illuminating portion 6 which are detected by multi-beam light-receiving portion 7. Based on a signal from multi-beam light-receiving portion 7 the arithmetic processing unit measures the time of intersection of spherical body 1 with a light beam, and then calculates the angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1 based on the aforementioned measured time period. Furthermore, this arithmetic processing unit also calculates the amount of directional rotation of spherical body 1 based on the aforementioned calculated angle of elevation, horizontal angle, velocity and surface velocity of spherical body 1.