Title:
PROXIMITY SWITCH
Document Type and Number:
WIPO Patent Application WO/1998/057342
Kind Code:
A1
Abstract:
A magnetism-sensitive light-emitting proximity switch (10) used for indicating the operating position of a fluid pressure cylinder, a float, etc. An electric circuit (12) including a magnetism sensitive switch (12a) and a light-emitting element (12b) is sealed in a molding body (11) of a light-transmissive resin in place of a resin case. The cost and size of the switch are reduced and waterproofness of the switch is improved. In addition, the light emission range of the switch is widened and the switch can be easily adapted to change the shape.
Inventors:
TAKAHASHI HIROSHI (JP)
Application Number:
PCT/JP1997/002050
Publication Date:
December 17, 1998
Filing Date:
June 13, 1997
Export Citation:
Assignee:
JAPAN PNEUMATICS CO LTD (JP)
TAKAHASHI HIROSHI (JP)
TAKAHASHI HIROSHI (JP)
International Classes:
H01H36/00; H01H9/04; H01H9/16; (IPC1-7): H01H36/00
Foreign References:
| JPS5580707U | 1980-06-03 | |||
| JPS6357501U | 1988-04-16 | |||
| JPH0388243U | 1991-09-10 | |||
| JPS5557246U | 1980-04-18 | |||
| JPS6175169U | 1986-05-21 | |||
| JPS62195922U | 1987-12-12 |
Attorney, Agent or Firm:
Ubukata, Motoshige (Kawaramachi 4-chome Chuo-k, Osaka-shi Osaka 541, JP)
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