Patent US4052581A successfully refreshed from Google Patents.
US4052581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switch with movable and fixed contacts
Assignee: Nippon Gakki Co Ltd
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Filing: 1975-10-28
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Granted: 1977-10-04
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Expires: 1995-10-28
Abstract
Abstract A switch is comprised of at least one leaf-like springy fixed contact, a movable contact, a supporting member for supporting the fixed contact and a positioning member for positioning the free end of the fixed contact. The leaf-like fixed contact is fixed by the supporting member at a position close to one end of the fixed contact, and is biased by the positioning member at a position close to the other end. Thus, the free end of the leaf-like springy fixed contact is placed at a position by its function of urging the positioning member.
Inventors
- 👤 Shigeru Matsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:59
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
110 words
A switch comprising: at least one springy fixed contact member having a free end; a springy movable contact member having a free end and capable of being moved by application of force to its free end into and out of contact with said fixed member; a supporting member supporting said fixed and movable members with the free end of said movable member extending beyond the free end of said fixed member; and a positioning means fixed to said supporting member and disposed between said free ends of said fixed and movable members and said supporting member for positioning said fixed and movable members for movement into and out of contact.
Claim 2
Dependent Claim
110 words
A switch comprising: at least one springy fixed contact member having a free end; a springy movable contact member having a free end and capable of being moved by application of force to its free end into and out of contact with said fixed member; a supporting member supporting said fixed and movable members with the free end of said movable member extending beyond the free end of said fixed member; and a positioning means fixed to said supporting member and disposed between said free ends of said fixed and movable members and said supporting member for positioning said fixed and movable members for movement into and out of contact.
Claim 3
Dependent Claim
24 words
A switch as in claim 1, wherein said free end of said fixed member is bent toward said free end of said movable member.
Claim 4
Dependent Claim
24 words
A switch as in claim 1, wherein said free end of said movable member is bent toward said free end of said fixed member.
Claim 5
Dependent Claim
31 words
A switch as in claim 1, including at least first and second fixed contacts supported on opposite sides of said movable member to form, with said movable contact, a switch unit.
Claim 6
Dependent Claim
20 words
A switch as in claim 4, including a plurality of switch units supported side by side by said supporting member.
Claim 7
Dependent Claim
37 words
A switch as in claim 1, wherein said supporting member comprises a block having a plurality of channels extending therethrough for each receiving a contact member and each contact member has a bulging portion engaging a channel.
Claim 8
Dependent Claim
30 words
A switch as in claim 6, wherein said positioning means includes a frame having at least upper and lower cross bars over and under which respectively fixed contact members extend.
Claim 9
Dependent Claim
13 words
A switch as in claim 1, wherein said contact members are German silver.
Claim 10
Dependent Claim
22 words
A switch as in claim 1, including at least four fixed members, one pair mounted on either side of said movable member.
Claim 11
Dependent Claim
41 words
A switch as in claim 9, wherein one contact member of each pair extends beyond the free end of the other contact member of that pair so that the contact members of each pair are electrically connected via said movable member.
Claim 12
Dependent Claim
14 words
A switch as in claim 1, wherein said contact members have a leaf-like shape.
Claim 13
Dependent Claim
20 words
A switch as in claim 1, wherein said supporting means and positioning member are formed as a single insulating piece.
Claim 14
Dependent Claim
39 words
A switch as in claim 1 wherein said positioning means includes a frame having upper and lower cross bars displaced horizontally with respect to each other, said frame formed as an integral piece of insulating material by a mold.
Claim 15
Dependent Claim
41 words
A switch as in claim 6, wherein said positioning means includes a frame having at least upper and lower cross bars over which said fixed contact member extends while said movable contact member extends between the upper and lower cross bars.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-03 | 1981-04-04 | 1981-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-03 | 1985-04-04 | 1985-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-03 | 1989-04-04 | 1989-10-04 | $7700.00 | Window Closed / Lapsed |