Patent US3646498A successfully refreshed from Google Patents.
US3646498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuit control apparatus
Assignee: Trane US Inc
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Filing: 1970-05-19
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Granted: 1972-02-29
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Expires: 1990-05-19
Abstract
Abstract Electrical circuit control apparatus and more particularly a spring-loaded contact pin assembly is described for making and breaking electrical circuits, the structure being particularly suited for circuits of railroad cars which are coupled and uncoupled and which cannot have exposed electrically live contact pins.
Inventors
- 👤 Robert T Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:52
CPC Classifications
B; B61; B61G; B61G5/00; B61G5/06; B61G5/10; H; H01; H01R; H01R13/00; H01R13/02; H01R13/22; H01R13/24; H01R13/2407; H01R13/2421
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
Electrical circuit control apparatus comprising block means, a first contact pin slidably mounted in said block means, first resilient means urging said first contact pin in a predetermined direction and first stop means limiting the movement of said first contact pin, a second contact pin axially aligned with said first contact pin, slidably mounted in said block means with an exposed head portion extending outwardly beyond said block means and having an outer contact end and an inner contact end, second resilient means urging said second contact pin out of engagement with said first contact pin, said second contact pin in its out of engagement position being in deenergized condition but being movable into engagement with said first contact pin and in conducting condition in relation thereto, an additional circuit control means mounted in said block means, and an actuator for said additional circuit control means in parallel relation to said second contact pin, whereby the circuit is continuously closed.
Claim 2
Dependent Claim
160 words
Electrical circuit control apparatus comprising block means, a first contact pin slidably mounted in said block means, first resilient means urging said first contact pin in a predetermined direction and first stop means limiting the movement of said first contact pin, a second contact pin axially aligned with said first contact pin, slidably mounted in said block means with an exposed head portion extending outwardly beyond said block means and having an outer contact end and an inner contact end, second resilient means urging said second contact pin out of engagement with said first contact pin, said second contact pin in its out of engagement position being in deenergized condition but being movable into engagement with said first contact pin and in conducting condition in relation thereto, an additional circuit control means mounted in said block means, and an actuator for said additional circuit control means in parallel relation to said second contact pin, whereby the circuit is continuously closed.
Claim 3
Dependent Claim
172 words
Electrical circuit control apparatus comprising block means including an outer block and an inner block with inner faces in engagement and with a plurality of aligned bores, a first contact pin slidably mounted in a first bore in said inner block, first resilient means in said first bore urging said first contact pin in a predetermined direction and first stop means limiting the movement of said first contact pin toward said outer block, a second contact pin axially aligned with said first contact pin and slidably mounted in a second bore in said outer block and having an exposed head portion extending outwardly beyond said outer block and an inner contact end disposed in said second bore in said inner block, second resilient means in said second bore urging said second contact pin out of engagement with said first contact pin, said second contact pin in its out of engagement position being in deenergized condition but being movable into engagement with said first contact pin and in conducting condition in relation thereto.
Claim 4
Dependent Claim
172 words
Electrical circuit control apparatus comprising block means including an outer block and an inner block with inner faces in engagement and with a plurality of aligned bores, a first contact pin slidably mounted in a first bore in said inner block, first resilient means in said first bore urging said first contact pin in a predetermined direction and first stop means limiting the movement of said first contact pin toward said outer block, a second contact pin axially aligned with said first contact pin and slidably mounted in a second bore in said outer block and having an exposed head portion extending outwardly beyond said outer block and an inner contact end disposed in said second bore in said inner block, second resilient means in said second bore urging said second contact pin out of engagement with said first contact pin, said second contact pin in its out of engagement position being in deenergized condition but being movable into engagement with said first contact pin and in conducting condition in relation thereto.
Claim 5
Dependent Claim
24 words
Electrical circuit control apparatus as defined in claim 2 in which said second contact pin has an outer head with a contact end thereon.
Claim 6
Dependent Claim
48 words
Electrical circuit control apparatus as defined in claim 2 in which said exposed head portion of said second contact pin is an enlarged head, a fixed abutment is provided in said block means, and said second resilient member is interposed between said enlarged head and said fixed abutment.
Claim 7
Dependent Claim
41 words
Electrical circuit control apparatus as defined in claim 2 in which an additional circuit control means is mounted in said block means, and an actuator is provided for said additional circuit control means in parallel relation to said second contact pin.
Claim 8
Dependent Claim
47 words
Electrical circuit control apparatus as defined in claim 2 in which said first contact pin has an abutment thereon in said first bore, said First resilient member is disposed in said first bore and is interposed between said abutment and a fixed portion of said inner block.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |