US3657500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration-sensitive electric switch
Assignee: Dynamit Nobel AG
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Filing: 1970-01-27
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Granted: 1972-04-18
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Expires: 1990-01-27
Abstract
Abstract A vibration-sensitive electric switch, for use in percussion or vibration fuses, particularly for hand and rifle grenades, as well as mines, having a pair of contacts, one of which is supported for movement into contact with the other contact in response to application of forces thereto and at least one of said contacts being deformable at least in the area of contact with said other contact so as to increase the contact time therebetween.
Inventors
- 👤 Heinz Gawlick
- 👤 Hellmut Bendler
- 👤 Gunter Hubsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:16
CPC Classifications
F; F42; F42C; F42C19/00; F42C19/06; H; H01; H01H; H01H1/00; H01H1/02; H01H35/00; H01H35/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
A vibration-sensitive electric switch comprising first and second electrical contacts, and support means for supporting said first contact for vibrational movement into contact with said second contact in response to forces applied thereto; at least one of said first and second contacts being readily plastically deformable to provide permanent deformation in the area of contact with said other contact so as to increase the contact time therebetween.
Claim 2
Dependent Claim
67 words
A vibration-sensitive electric switch comprising first and second electrical contacts, and support means for supporting said first contact for vibrational movement into contact with said second contact in response to forces applied thereto; at least one of said first and second contacts being readily plastically deformable to provide permanent deformation in the area of contact with said other contact so as to increase the contact time therebetween.
Claim 3
Dependent Claim
31 words
A vibration-sensitive electric switch as defined in claim 1, wherein at least said area of contact on said one of said first and second contacts is formed of electrically conductive material.
Claim 4
Dependent Claim
35 words
A vibration-sensitive electric switch as defined in claim 1, wherein at least said area of contact on said one of said first and second contacts is formed of a readily plastically deformable, electrically conductive material.
Claim 5
Dependent Claim
47 words
A vibration-sensitive electric switch as defined in claim 1, wherein at least said area of contact on said one of said first and second contacts is formed of a metal selected from the group consisting of gold, silver, tin, and tin with the addition of antimony thereto.
Claim 6
Dependent Claim
47 words
A vibration-sensitive electric switch as defined in claim 1, wherein said one of said first and second contacts is formed of a base part having a readily plastically deformable, electrically conductive material provided as a coating over at least a part thereof forming said area of contact.
Claim 7
Dependent Claim
21 words
A vibration-sensitive electric switch as defined in claim 5, wherein said base part is formed of an electrically non-conductive, deformable material.
Claim 8
Dependent Claim
46 words
A vibration-sensitive electric switch as defined in claim 1, wherein said support means includes a housing fixedly supporting said second contact and means including a spring connected to said first contact for supporting said first contact for vibrational movement in the vicinity of said second contact.
Claim 9
Dependent Claim
52 words
A vibration-sensitive electric switch as defined in claim 7, wherein said housing includes a support ring for supporting said first contact in an inoperable fixed position and said means for supporting said first contact for vibrational movement includes means for disengaging said first contact from said support ring for arming the switch.
Claim 10
Dependent Claim
38 words
A vibration-sensitive electric switch as defined in claim 1, wherein said first contact is provided in the form of a cup having an internal space and said second contact includes an axial extension projecting into said internal space.
Claim 11
Dependent Claim
23 words
A vibration-sensitive electric switch as defined in claim 9, wherein said axial extension is formed of a readily plastically deformable, electrically conductive material.
Claim 12
Dependent Claim
35 words
A vibration-sensitive electric switch as defined in claim 9, wherein said axial extension is formed of a metal selected from the group consisting of gold, silver, tin, and tin with the addition of antimony thereto.
Claim 13
Dependent Claim
29 words
A vibration-sensitive electric switch as defined in claim 9, wherein said axial extension is formed of a non-conductive base part having a readily plastically deformable, electrically conductive layer thereon.
Claim 14
Dependent Claim
93 words
A vibration-sensitive electric switch as defined in claim 9, for use in percussion or vibration fuses, particularly for hand and rifle grenades, as well as mines, wherein said support means includes a housing, said second electrical contact being fixedly supported in electrically insulating relationship at one end of said housing, a battery supported in said housing having one pole thereof in contact with said housing, and a spring interconnecting the other pole of said battery and said first contact and supporting said contact for movement in response to forces applied to said housing.
Claim 15
Dependent Claim
68 words
A vibration-sensitive electric switch as defined in claim 13, wherein said battery is slideable in said housing between first and second positions, a conductive support ring secured to said housing and contacting said first contact only in the first position of said battery, said first contact being translatable with movement of said battery to said second position to a position wherein contact with said second contact is possible.
References Cited (Backward Citations)
US2662945A
Cited
US2763773A
Cited
US3415960A
Cited
US3052784A
Cited
US3337701A
Cited
US3369097A
Cited
US3416451A
Cited
US3465109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |