US3250884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical switch having improved movable contact holding means and contact cleaning means
Assignee: Cutler Hammer Inc
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Filing: 1964-03-02
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Granted: 1966-05-10
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Robert E Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
H; H01; H01H; H01H23/00; H01H23/02; H01H23/12; H01H23/16; H01H23/164; H01H1/00; H01H1/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN AN ELECTRIC SWITCH A HOUSING, A PAIR OF RESILIENT SPACED APART STATIONARY CONTACTS MOUNTED IN SAID HOUSING, A BRIDGING CONTACT MOVABLE BETWEEN SAID STATIONARY CONTACTS INTO AND OUT OF BRIDGING CONTACT WITH SAID STATIONARY CONTACTS, A MOLDED INSULATING GOLDER BETWEEN SAID STATIONARY CONTACTS HOLDING SAID BRIDGING CONTACT AND BEING MOVABLE IN SLIDING ENGAGEMENT WITH SAID STATIONARY CONTACTS, SAID HOLDER FURTHER HAVING A PLURALITY OF PARALLEL CLOSELY SPACED GROOVES SUBSTANTIALLY PERPENDICULAR TO THE DIRECTION OF MOVEMENT OF SAID HOLDER AND FORMED ON THE SURFACE OF SAID HOLDER ADJACENT SAID BRIDGING CONTACT ON THE SURFACES OF SAID HOLDER WHICH SLIDINGLY ENGAGE SAID STATIONARY CONTACTS, SAID GROOVES HAVING RELATIVELY SHARP EDGES FORMED THEREBETWEEN FOR MILDLY ABRADING THE CONTACT MAKING SURFACES OF SAID STATIONARY CONTACTS.
Claim 2
Dependent Claim
122 words
IN AN ELECTRIC SWITCH A HOUSING, A PAIR OF RESILIENT SPACED APART STATIONARY CONTACTS MOUNTED IN SAID HOUSING, A BRIDGING CONTACT MOVABLE BETWEEN SAID STATIONARY CONTACTS INTO AND OUT OF BRIDGING CONTACT WITH SAID STATIONARY CONTACTS, A MOLDED INSULATING GOLDER BETWEEN SAID STATIONARY CONTACTS HOLDING SAID BRIDGING CONTACT AND BEING MOVABLE IN SLIDING ENGAGEMENT WITH SAID STATIONARY CONTACTS, SAID HOLDER FURTHER HAVING A PLURALITY OF PARALLEL CLOSELY SPACED GROOVES SUBSTANTIALLY PERPENDICULAR TO THE DIRECTION OF MOVEMENT OF SAID HOLDER AND FORMED ON THE SURFACE OF SAID HOLDER ADJACENT SAID BRIDGING CONTACT ON THE SURFACES OF SAID HOLDER WHICH SLIDINGLY ENGAGE SAID STATIONARY CONTACTS, SAID GROOVES HAVING RELATIVELY SHARP EDGES FORMED THEREBETWEEN FOR MILDLY ABRADING THE CONTACT MAKING SURFACES OF SAID STATIONARY CONTACTS.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |