Patent US1893484A successfully refreshed from Google Patents.
Patent US3569643A successfully refreshed from Google Patents.
US3569643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inertia switch having releasable latch means
Assignee: CB ASS Ltd
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Filing: 1969-09-02
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Granted: 1971-03-09
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Expires: 1989-09-02
Abstract
Abstract The invention provides an inertia switching device defining a seating, an operating mass of magnetic material normally retained in the seating by means of a magnet positioned adjacent the seating and an actuating member slidably mounted within the housing and displaceable from a first to a second position by the magnetic-operating mass upon dislodgement thereof from the seating upon application of an external perturbation to make or break an electrical circuit, and means mounted on or adjacent the actuating member and coacting with the housing to maintain said member in its second position.
Inventors
- 👤 Walter Wilson Hugh Clarke
- 👤 Terence Alexander Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:15
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
230 words
An inertia switch device, comprising: housing means having a seat formed thereon; magnet means mounted on said housing means and positioned adjacent said seat; an actuating member movably mounted on said housing means for movement between first and second positions, said actuating member having a portion disposed opposite said seat with said actuating member being normally maintained in said first position, movement of said actuating member to said second position causing said portion to be moved away from said seat; electrical contacts fixedly mounted on said housing means coacting with said actuating member for creating an electrical circuit when said actuating member is in one of said positions; an inertia mass movably disposed within said housing means between said seat and said portion of said actuating member, said inertia mass being normally magnetically attracted to said magnet means so as to be held in engagement with said seat whereby imposition of a shock force on said switch device causes said inertia mass to be moved away from said seat so as to strike said portion of said actuating member and move said actuating member from said first position to said second position; and releasable latch means separate from said electrical contacts acting between said actuating member and said housing means when said actuating member has been moved to said second position for holding said actuating member in said second position.
Claim 2
Dependent Claim
230 words
An inertia switch device, comprising: housing means having a seat formed thereon; magnet means mounted on said housing means and positioned adjacent said seat; an actuating member movably mounted on said housing means for movement between first and second positions, said actuating member having a portion disposed opposite said seat with said actuating member being normally maintained in said first position, movement of said actuating member to said second position causing said portion to be moved away from said seat; electrical contacts fixedly mounted on said housing means coacting with said actuating member for creating an electrical circuit when said actuating member is in one of said positions; an inertia mass movably disposed within said housing means between said seat and said portion of said actuating member, said inertia mass being normally magnetically attracted to said magnet means so as to be held in engagement with said seat whereby imposition of a shock force on said switch device causes said inertia mass to be moved away from said seat so as to strike said portion of said actuating member and move said actuating member from said first position to said second position; and releasable latch means separate from said electrical contacts acting between said actuating member and said housing means when said actuating member has been moved to said second position for holding said actuating member in said second position.
Claim 3
Dependent Claim
69 words
A switch device according to claim 1, wherein said actuating member is of T-shaped configuration in side elevation, and has conductive arm means engageable with said contacts, said releasable latch means including a spring latch secured to said actuating member, said spring latch having a shoulder portion urged out of said housing means for engaging a part of same for resiliently holding said actuating member in said second position.
Claim 4
Dependent Claim
37 words
A switch device according to claim 2, wherein said actuating member is normally urged into said first position by a spring mounted encircling said spring latch between said actuating member and an abutment on said housing means.
Claim 5
Dependent Claim
28 words
A switch device according to claim 2, wherein said arm means of said actuating member contacts said electrical contacts in said first position to make an electrical circuit.
Claim 6
Dependent Claim
72 words
A switch device according to claim 1, wherein said actuating member includes an elongated shank having a peripheral groove and said releasable latch means includes a plunger mounted in a bore of said housing means, and spring means urging one end of said plunger into said groove when said actuating member is in said second position, and means holding the other end of said plunger against movement relative to said housing means.
Claim 7
Dependent Claim
34 words
A switch device accordIng to claim 5, wherein there are a pair of said electrical contacts, said pair of electrical contacts and said plunger being mounted in said housing means and mutually displaced circumferentially.
Claim 8
Dependent Claim
13 words
A switch device according to claim 1, wherein said magnet means is cylindrical.
Claim 9
Dependent Claim
16 words
A switch device according to claim 1, wherein said magnet means is square in cross section.
Claim 10
Dependent Claim
17 words
A switch device according to claim 1, wherein said magnet means is fixedly mounted in said housing.
Claim 11
Dependent Claim
20 words
A switch device according to claim 1, wherein said magnet means is mounted for adjustment in position in said housing.
References Cited (Backward Citations)
US3493701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |