Title:
【発明の名称】踏越し記録装置
Document Type and Number:
Japanese Patent JPS59500999
Kind Code:
A
Abstract:
A device for use in connection with sports and athletics exercise for recording overstep in relation to a predetermined reference line, which may be a start line or a take-off line for measuring the length of a jump or throw. The device comprises a step cushion (7), which is located in direct connection to said reference line (20) and extends along said line, and which airtight encloses a cavity (11) of a definite volume provided with air of a predetermined pressure, and which is capable upon being loaded on its upper surface to instantaneously reduce the volume of said cavity (11) for obtaining a pressure increase, and a pressure indicator (17) is connected to said cavity (11) which in response to such pressure increase initiates a signal member (18) to emit an optic and/or acustic signal.
Inventors:
Lindoma-ku gustav
Application Number:
JP50189483A
Publication Date:
June 07, 1984
Filing Date:
June 02, 1983
Export Citation:
Assignee:
Gustav Lindoma-Que End There-I-Umea Avi-
International Classes:
A63B5/00; A63B71/06; A63B5/16; H01H3/24; (IPC1-7): A63B5/16; A63B71/06
Attorney, Agent or Firm:
Okamoto Shigefumi