US3609257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide switch
Assignee: Ricoh Co Ltd
•
Filing: 1970-01-27
•
Granted: 1971-09-28
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Expires: 1990-01-27
Abstract
Abstract A slide switch in which either of fixed or movable contact elements have electrically high resistance portions formed at portions where fixed and movable contact elements start to contact with each other and at portions where fixed and movable contact elements start to move away from each other.
Inventors
- 👤 Sei Jinsenji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:05
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/30; H01H9/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
In combination with a slide switch having an arcuately shaped fixed contact portion and a slide contact arcuately moving thereacross to make and break electrical contact therewith comprising: the fixed contact having at least one stepped configuration including an upstanding portion adapted to be contacted by the slide contact; said upstanding portion including a first part having a predetermined electrical resistance to flow of electricity; said upstanding portion including a second part having an electrical resistance to the flow of electricity greater than the resistance of said first part; and said second part located in an end portion of said upstanding portion to prevent arcing between said fixed and slide contacts with respect to relative movement of said fixed and slide contacts.
Claim 2
Dependent Claim
122 words
In combination with a slide switch having an arcuately shaped fixed contact portion and a slide contact arcuately moving thereacross to make and break electrical contact therewith comprising: the fixed contact having at least one stepped configuration including an upstanding portion adapted to be contacted by the slide contact; said upstanding portion including a first part having a predetermined electrical resistance to flow of electricity; said upstanding portion including a second part having an electrical resistance to the flow of electricity greater than the resistance of said first part; and said second part located in an end portion of said upstanding portion to prevent arcing between said fixed and slide contacts with respect to relative movement of said fixed and slide contacts.
Claim 3
Dependent Claim
46 words
The combination of claim 1 in which a plurality of stepped upstanding portions are provided, and each said upstanding portion includes one said second part to prevent arcing when said slide contact first makes an electrical connection and when said slide contact breaks the electrical connection.
Claim 4
Dependent Claim
29 words
The combination of claim 1 in which said second part is overlaid upon said upstanding portion to form a raised surface thereon to be contacted by said slide contact.
Claim 5
Dependent Claim
35 words
The combination of claim 1 in which said second part is formed within said upstanding portion so that an upper surface of said second part is coplanar with an upper surface of said upstanding portion.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |