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US3657503A Expired / Lapsed US ⏱️ 0.0 years remaining

Terminal enclosure

Assignee: General Electric Co
•
Filing: 1970-08-27
•
Granted: 1972-04-18
•
Expires: 1990-08-27
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Abstract

Abstract A terminal enclosure for the secondary terminals of an instrument transformer. The enclosure comprises a terminal block or securing member mounting on the secondary terminals. The securing or block member is provided with port barriers to bar access to the secondary terminals. A clear plastic box cover is provided made of electrically insulating material which fits over the terminal block member. A thumb nut is held captive in the cover and engages a stud on the securing member to secure the cover to such securing member for enclosing the terminals. A pair of ports are formed in the cover to provide access to the secondary terminals in one position of the cover. A short circuit device is mounted on the stud and interlocks with the cover such that the ports in the cover are barred when the shorting device is in its closed position.

Inventors

  • 👤 John A Smith

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 00:54
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/70; H01F; H01F27/00; H01F27/40; H01R9/00; H01R9/22; H01R9/223

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 91 words
A terminal enclosure for the secondary terminals of an instrument transformer comprising, in combination; a. a securing member including a base portion having openings to receive the secondary terminals, snap locking means on said base portion, said snap locking means acting to lock said securing member to the secondary terminals, b. an open box cover member of clear plastic material, said cover member having a pair of ports in a side thereof to provide access to the secondary terminals and attaching means for attaching said cover member to said securing member.
Claim 2
Dependent Claim 91 words
A terminal enclosure for the secondary terminals of an instrument transformer comprising, in combination; a. a securing member including a base portion having openings to receive the secondary terminals, snap locking means on said base portion, said snap locking means acting to lock said securing member to the secondary terminals, b. an open box cover member of clear plastic material, said cover member having a pair of ports in a side thereof to provide access to the secondary terminals and attaching means for attaching said cover member to said securing member.
Claim 3
Dependent Claim 31 words
A terminal enclosure as claimed in claim 1 in which a pair of barriers are formed on said base member, said barriers closing said ports in one position of said cover.
Claim 4
Dependent Claim 44 words
A terminal enclosure as claimed in claim 2 in which a shorting bar is provided, said shorting bar being mounted on a stud member in said base portion of said securing member, said shorting bar being movable between a shorting and an open position.
Claim 5
Dependent Claim 62 words
A terminal enclosure as claimed in claim 3 in which a plurality of projections are provided on the inner surface of said cover member, said projections cooperating with said shorting bar such that said cover member will only seat on said securing member in a position in which said barriers close said ports when said shorting bar is in a shorting position.

References Cited (Backward Citations)

US1667617A Cited
US1786746A Cited
US3208021A Cited
US3283062A 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

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