IT1071916B - Timing switch for swimming competitions - has switch operated by swimmer with shaped bridging contact forming spacer between plates - Google Patents
Timing switch for swimming competitions - has switch operated by swimmer with shaped bridging contact forming spacer between platesInfo
- Publication number
- IT1071916B IT1071916B IT1248477A IT1248477A IT1071916B IT 1071916 B IT1071916 B IT 1071916B IT 1248477 A IT1248477 A IT 1248477A IT 1248477 A IT1248477 A IT 1248477A IT 1071916 B IT1071916 B IT 1071916B
- Authority
- IT
- Italy
- Prior art keywords
- switch
- swimmer
- plates
- spaced
- swimming
- Prior art date
Links
Abstract
The switch, mounted at the end of a swimming bath, is used in swimming races, where it is pushed by a swimmer on reaching that end and forms part of the timing system. A back plate (D) made of insulating material, is spaced from a front plate (E) made of a pliable material that will press only the nearest contact when pushed. This is perforated to reduce resistance to movement of the water. On the rear of the outer plate are attached three vertical metal strips (A,B,A) spaced an equal distance apart. Between these strips and the inner plate is a single contact strip or two contact strips spaced some distance apart. Each contact strip is gull wing shaped so that when compressed, its tips bridge the contacts formed by the metal strips. This strip also acts as a spacer between the plates.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1248477A IT1071916B (en) | 1977-02-28 | 1977-02-28 | Timing switch for swimming competitions - has switch operated by swimmer with shaped bridging contact forming spacer between plates |
CH188078A CH629274A5 (en) | 1977-02-28 | 1978-02-22 | Plate for indicating electrically arrival of a swimmer in swimming races |
US06/165,742 US4476358A (en) | 1977-02-28 | 1980-07-03 | Touch pad indicating arrival during swimming contests |
US06/632,610 US4587385A (en) | 1977-02-28 | 1984-07-18 | Touch pad indicating arrival during swimming contest |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1248477A IT1071916B (en) | 1977-02-28 | 1977-02-28 | Timing switch for swimming competitions - has switch operated by swimmer with shaped bridging contact forming spacer between plates |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1071916B true IT1071916B (en) | 1985-04-10 |
Family
ID=11140707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT1248477A IT1071916B (en) | 1977-02-28 | 1977-02-28 | Timing switch for swimming competitions - has switch operated by swimmer with shaped bridging contact forming spacer between plates |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1071916B (en) |
-
1977
- 1977-02-28 IT IT1248477A patent/IT1071916B/en active
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