US3767870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple circuit control switch with spring biased slide operating means engaging pivoted contact assembly
Assignee: F J AND MARQUARDT J
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Filing: 1972-04-26
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Granted: 1973-10-23
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Expires: 1992-04-26
Abstract
Abstract An electric switch with a contact bridge pivotable between two end position and constructed as a double-armed lever, at least two fixed contacts being bridged in at least one of the said end positions, wherein the pivoting range of the contact bridge contains an operating element which is displaceable between two end positions, and which in one of these latter is mainly associated with one lever arm, while in the other end position it is mainly associated with the other lever arm, and which in the zone of its end positions forms a stop device for the rotation of the lever arm in question, while the particular lever arm which is free at the time, or some element connected therewith, extends into the path of motion of the said operating element.
Inventors
- 👤 E Marquardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:16
CPC Classifications
H; H01; H01H; H01H15/00; H01H15/02; H01H15/06; H01H15/10; H01H15/102
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
192 words
In an electric switch the combination comprising a switch housing having lower and upper walls, a central fixed electrically-conductive contact located on said lower wall and forming a pivot bearing, two outer fixed contacts located on opposite sides of central contact, a double-armed lever having a central attachment depending from said lever at the juxtaposition of said two arms, said attachment being pivotably mounted in said pivot bearing, a movable contact on the end of each said arm remote from said central attachment, an operating element within said housing and having an extension which passes through said housing to the outside thereof, the operating element and extension being longitudinally movable along their longitudinal axes, the combination further comprising a spring between said upper wall and said operating element and its extension, whereby when said operating element is moved in one direction said movable contact on one arm of said double-armed lever is urged into contact with one of said fixed contacts and when said operating element is moved in said opposite direction said movable contact on said other arm of said double-armed lever is urged into contact with said other fixed contact.
Claim 2
Dependent Claim
192 words
In an electric switch the combination comprising a switch housing having lower and upper walls, a central fixed electrically-conductive contact located on said lower wall and forming a pivot bearing, two outer fixed contacts located on opposite sides of central contact, a double-armed lever having a central attachment depending from said lever at the juxtaposition of said two arms, said attachment being pivotably mounted in said pivot bearing, a movable contact on the end of each said arm remote from said central attachment, an operating element within said housing and having an extension which passes through said housing to the outside thereof, the operating element and extension being longitudinally movable along their longitudinal axes, the combination further comprising a spring between said upper wall and said operating element and its extension, whereby when said operating element is moved in one direction said movable contact on one arm of said double-armed lever is urged into contact with one of said fixed contacts and when said operating element is moved in said opposite direction said movable contact on said other arm of said double-armed lever is urged into contact with said other fixed contact.
Claim 3
Dependent Claim
73 words
Said switch as defined in claim 1 in which said double-armed lever is provided, on said side facing towards said operating element, with a cavity which is symmetrical to the axis of rotation and of which the length in the direction of displacement of said operating element corresponds approximately to the length of the operating element and of which the two projecting ends of said operating element are constructed as oblique run-up surfaces.
Claim 4
Dependent Claim
23 words
Said switch as defined in claim 1 in which said two arms of said double-armed lever form an obtuse angle with each other.
Claim 5
Dependent Claim
26 words
Said switch as defined in claim 1 in which one of said outer fixed contacts is electrically conductive and said other fixed outer contact is non-conductive.
Claim 6
Dependent Claim
18 words
Said switch as defined in claim 1 in which both said two outer fixed contacts are electrically conductive.
References Cited (Backward Citations)
US2222765A
Cited
US2794086A
Cited
US2909624A
Cited
US2900460A
Cited
US3258549A
Cited
US3221115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |