Patent US2605136A successfully refreshed from Google Patents.
Patent US3764804A successfully refreshed from Google Patents.
US3764804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operator serviceable corona charging apparatus
Assignee: Pitney Bowes Inc
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Filing: 1972-01-24
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Granted: 1973-10-09
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Expires: 1992-01-24
Abstract
Abstract A corona charging assembly for electrostatic copy machines is disclosed as having an elongated U-shaped shell and an elongated U-shaped, snap-on cover for access through a backwall opening in the shell to the corona wires for cleaning thereof. In practice, two opposed charging assemblies are employed and are readily removable from the machine by disengagement from mounting means and plug-in high voltage connections.
Inventors
- 👤 H Hirschman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:07
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/02; G03G15/0258; G03G15/0291
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
243 words
Corona charging apparatus for electrostatic copier machines, said apparatus comprising, in combination: A. first and second corona charging assemblies each including 1. an elongated conductive shell having an open side, 2. an electrically insulative terminal block secured at each end of said shell, 3. at least one corona discharge wire extending between said terminal blocks, 4. copy paper guide means extending across said open side, 5. means forming an elongated opening in said shell, and 6. an electrically conductive cover detachably mounted to said shell over said opening; B. a mounting block secured to the copier frame, C. engageable means carried by said mounting block and one of said terminal blocks of said first assembly for releasably mounting one end of said first assembly and for providing external high voltage connections to said corona discharge wires, D. a bracket secured to the copier frame for releasably mounting the other end of said first assembly, E. first and second electrically conductive grounding members respectively carried by said first and second assemblies for grounding said shells thereof to the copier frame, F. means releasably mounting said second assembly in opposed, contiguous relation to said first assembly, and G. a contact carried by said one terminal block of said first assembly and the opposed one of said terminal blocks of said second assembly for completing a high voltage circuit to said corona wire of said second assembly when both said assemblies are in opposed operative relation.
Claim 2
Dependent Claim
243 words
Corona charging apparatus for electrostatic copier machines, said apparatus comprising, in combination: A. first and second corona charging assemblies each including 1. an elongated conductive shell having an open side, 2. an electrically insulative terminal block secured at each end of said shell, 3. at least one corona discharge wire extending between said terminal blocks, 4. copy paper guide means extending across said open side, 5. means forming an elongated opening in said shell, and 6. an electrically conductive cover detachably mounted to said shell over said opening; B. a mounting block secured to the copier frame, C. engageable means carried by said mounting block and one of said terminal blocks of said first assembly for releasably mounting one end of said first assembly and for providing external high voltage connections to said corona discharge wires, D. a bracket secured to the copier frame for releasably mounting the other end of said first assembly, E. first and second electrically conductive grounding members respectively carried by said first and second assemblies for grounding said shells thereof to the copier frame, F. means releasably mounting said second assembly in opposed, contiguous relation to said first assembly, and G. a contact carried by said one terminal block of said first assembly and the opposed one of said terminal blocks of said second assembly for completing a high voltage circuit to said corona wire of said second assembly when both said assemblies are in opposed operative relation.
Claim 3
Dependent Claim
12 words
an electrically insulative terminal block secured at each end of said shell,
Claim 4
Dependent Claim
12 words
an electrically insulative terminal block secured at each end of said shell,
Claim 5
Dependent Claim
23 words
The apparatus defined in claim 1, wherein said engageable means includes a mating socket and sleeve pair with mating electrical connectors accommodated therein.
Claim 6
Dependent Claim
42 words
The apparatus defined in claim 2, wherein said first grounding member is formed having detent means for engaging complimentary detent means on said bracket to retain said other end of said first assembly releaseably mounted thereon and to ground said shell thereof.
Claim 7
Dependent Claim
11 words
at least one corona discharge wire extending between said terminal blocks,
Claim 8
Dependent Claim
11 words
at least one corona discharge wire extending between said terminal blocks,
Claim 9
Dependent Claim
9 words
copy paper guide means extending across said open side,
Claim 10
Dependent Claim
9 words
copy paper guide means extending across said open side,
Claim 11
Dependent Claim
43 words
The apparatus defined in claim 3, wherein said first and second grounding members are formed with complimentary engageable latch means for electrically connecting said grounding members in common and for releasably retaining said second assembly in opposed operative relation to said first assembly.
Claim 12
Dependent Claim
59 words
The apparatus defined in claim 1, wherein said shells and said covers are U-shaped in cross section having backwalls and opposed sidewalls, said openings being formed in said backwalls of said shells opposite said open sides, and mating detent means provided in said side walls of said covers and said shells for snap fitting said covers to said shells.
Claim 13
Dependent Claim
9 words
means forming an elongated opening in said shell, and
Claim 14
Dependent Claim
9 words
means forming an elongated opening in said shell, and
Claim 15
Dependent Claim
167 words
an electrically conductive cover detachably mounted to said shell over said opening; B. a mounting block secured to the copier frame, C. engageable means carried by said mounting block and one of said terminal blocks of said first assembly for releasably mounting one end of said first assembly and for providing external high voltage connections to said corona discharge wires, D. a bracket secured to the copier frame for releasably mounting the other end of said first assembly, E. first and second electrically conductive grounding members respectively carried by said first and second assemblies for grounding said shells thereof to the copier frame, F. means releasably mounting said second assembly in opposed, contiguous relation to said first assembly, and G. a contact carried by said one terminal block of said first assembly and the opposed one of said terminal blocks of said second assembly for completing a high voltage circuit to said corona wire of said second assembly when both said assemblies are in opposed operative relation.
Claim 16
Dependent Claim
167 words
an electrically conductive cover detachably mounted to said shell over said opening; B. a mounting block secured to the copier frame, C. engageable means carried by said mounting block and one of said terminal blocks of said first assembly for releasably mounting one end of said first assembly and for providing external high voltage connections to said corona discharge wires, D. a bracket secured to the copier frame for releasably mounting the other end of said first assembly, E. first and second electrically conductive grounding members respectively carried by said first and second assemblies for grounding said shells thereof to the copier frame, F. means releasably mounting said second assembly in opposed, contiguous relation to said first assembly, and G. a contact carried by said one terminal block of said first assembly and the opposed one of said terminal blocks of said second assembly for completing a high voltage circuit to said corona wire of said second assembly when both said assemblies are in opposed operative relation.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |