US3676626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pushbutton switch with liquid drainage facilitating cage body, and diaphragm sealing and actuating means
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1970-06-15
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Granted: 1972-07-11
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Expires: 1990-06-15
Abstract
Abstract This is a switch which includes a flexible diaphragm adapted to flex when actuated by a plunger spring thereby providing both a water-proof seal and part of the actuating system of the switch. The switch body is formed of an upper circular member having an axial hole formed therethrough and a lower circular member having an axial hole formed therethrough, the two members connected by a pair of legs which are in-spaced opposed relation to each other provoding an open cage like configuration which will allow water to drain outwardly and assist in waterproofing the switch.
Inventors
- 👤 Edward B Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:45
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/12; H01H13/14; H01H13/04; H01H13/06; F; F25; F25D; F25D2500/00; F25D2500/02; F25D29/00; F25D29/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
148 words
A switch comprising an open cage body, having a series of unrestricted openings around its periphery, the body having an upper plunger holder, an intregal leg extending from each side of the plunger holder, the legs being spaced from each other providing the unrestricted openings and in spaced parallel opposed relation to each other and to the axis of the switch and having an end and each of said legs having a transversely arced inner surface and said ends being joined by an intregal ring portion, a plunger movably associated with the body, between said legs, and having a plunger spring associated therewith, a contact assembly including a case, a contact spring engaged with the case and with a movable contact, at least one fixed contact, a flexible diaphragm directly engaged with the plunger spring and the movable contact and interposed therebetween, the case engaged to the body.
Claim 2
Dependent Claim
148 words
A switch comprising an open cage body, having a series of unrestricted openings around its periphery, the body having an upper plunger holder, an intregal leg extending from each side of the plunger holder, the legs being spaced from each other providing the unrestricted openings and in spaced parallel opposed relation to each other and to the axis of the switch and having an end and each of said legs having a transversely arced inner surface and said ends being joined by an intregal ring portion, a plunger movably associated with the body, between said legs, and having a plunger spring associated therewith, a contact assembly including a case, a contact spring engaged with the case and with a movable contact, at least one fixed contact, a flexible diaphragm directly engaged with the plunger spring and the movable contact and interposed therebetween, the case engaged to the body.
Claim 3
Dependent Claim
53 words
A switch as set forth in claim 1 wherein the diaphragm includes a disc portion having an inner wall extending upwardly therefrom and an outer wall extending from the inner wall forming an angle therewith, and a tab portion extending from the outer wall on substantially the same plane as the disc portion.
Claim 4
Dependent Claim
49 words
A switch as set forth in claim 2 wherein the disc portion has a rod portion extending from one side and post portion extending from the opposite side of the disc portion, the rod portion circumscribed by the plunger spring and the post portion circumscribed by the contact spring.
Claim 5
Dependent Claim
40 words
A switch as set forth in claim 3 wherein the plunger spring abutts the disc portion of the diaphram and the movable contact has an aperture formed therethrough and the post portion extends into the aperture in the movable contact.
References Cited (Backward Citations)
US1405537A
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GB620958A
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FR1073267A
Cited
DE1162909B
Cited
US3140365A
Cited
FR1306689A
Cited
DE1463231A1
Cited
GB1116030A
Cited
US3459059A
Cited
US3408464A
Cited
US3586810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |