US3728586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ac power module having an integral mechanical safety device
Assignee: HP Inc
•
Filing: 1972-01-07
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Granted: 1973-04-17
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Expires: 1992-01-07
Abstract
Abstract An A.C. power receptacle is contained in one compartment of a module and a fuse holder, fuse ejector and line voltage switch are contained in the other compartment. A sliding door allows access to only one compartment at a time, and a safety interlock prevents the line voltage switch from being changed unless the fuse is ejected.
Inventors
- 👤 A Inhelder
- 👤 R Hoogner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:51
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/66; H01R13/68
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
150 words
An input power module comprising: a module housing and a sliding door, the module housing having first and second adjacent compartments, each compartment having an opening, the openings being coplanar, and the sliding door sliding in the housing to cover one of the first and second compartment openings; an input power connector mounted in the first compartment; a fuse ejector having a first and second position; a switch having a first and second position; a fuse, a fuse holder, the fuse ejector and the switch being mounted in the second compartment; the switch being locked in one of the first and second positions when the fuse ejector is in the first position; the fuse being ejected from the fuse holder and the switch being unlocked when the fuse ejector is in the second position; and a plurality of output terminals connected to the input power connector, fuse holder and switch.
Claim 2
Dependent Claim
150 words
An input power module comprising: a module housing and a sliding door, the module housing having first and second adjacent compartments, each compartment having an opening, the openings being coplanar, and the sliding door sliding in the housing to cover one of the first and second compartment openings; an input power connector mounted in the first compartment; a fuse ejector having a first and second position; a switch having a first and second position; a fuse, a fuse holder, the fuse ejector and the switch being mounted in the second compartment; the switch being locked in one of the first and second positions when the fuse ejector is in the first position; the fuse being ejected from the fuse holder and the switch being unlocked when the fuse ejector is in the second position; and a plurality of output terminals connected to the input power connector, fuse holder and switch.
Claim 3
Dependent Claim
20 words
Input power module as in claim 1 wherein the power module includes a filter connected to the input power connector.
Claim 4
Dependent Claim
27 words
Input power module as in claim 1 wherein the power module includes an output power socket connected in parallel with and adjacent to the input power connector.
Claim 5
Dependent Claim
147 words
In an electrical apparatus including electrical circuits: an electrical module comprising input means for receiving electrical power; fuse holding means mounted in the housing for holding the fuse; circuit means including a fuse and switch means connecting the input means to the electrical circuits; a housing containing the input means and the fuse and switch means; a mechanical means connected to the housing for preventing access to and reception of electrical power by the input means in response to the fuse and switch means being accessible and for preventing access to the fuse and switch means in response to the input means being accessible; and fuse ejecting means for ejecting the fuse, the fuse ejecting means preventing operation of the switch means when the fuse is held in the fuse holding means and the ejecting means being inoperable when the mechanical means prevents access to the fuse.
Claim 6
Dependent Claim
147 words
In an electrical apparatus including electrical circuits: an electrical module comprising input means for receiving electrical power; fuse holding means mounted in the housing for holding the fuse; circuit means including a fuse and switch means connecting the input means to the electrical circuits; a housing containing the input means and the fuse and switch means; a mechanical means connected to the housing for preventing access to and reception of electrical power by the input means in response to the fuse and switch means being accessible and for preventing access to the fuse and switch means in response to the input means being accessible; and fuse ejecting means for ejecting the fuse, the fuse ejecting means preventing operation of the switch means when the fuse is held in the fuse holding means and the ejecting means being inoperable when the mechanical means prevents access to the fuse.
Claim 7
Dependent Claim
30 words
Electrical module as in claim 4 wherein there is an additional switch connected between the input means and the electrical circuits and the additional switch is mounted in the housing.
References Cited (Backward Citations)
US1620814A
Cited
US3080493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |