Patent US2762330A successfully refreshed from Google Patents.
Patent US5084862A successfully refreshed from Google Patents.
US5084862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk cartridge shutter
Assignee: Maxell Ltd
•
Filing: 1989-07-24
•
Granted: 1992-01-28
•
Expires: 2009-07-24
Abstract
Abstract A shutter, made of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk comprising a pair of side plates facing each other, a connection plate for connecting corresponding ends of the side plates to provide the shutter with a substantially U-shaped cross-section, and an ejection mark formed by means of ejection pin moulding, disposed on a portion of an outer surface of one of the side plates, such that an end surface of the connection plate is at least partially extended.
Inventors
- 👤 Minoru Fujita
- 👤 Masaru Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:41
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/03; B; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/33; G11B23/0301; G11B23/0308; G11B23/033; G11B23/0332
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
150 words
A shutter, molded of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk, said shutter comprising: a pair of side plates facing each other; a connection plate for connecting corresponding ends of said side plates to provide said shutter with a substantially U-shaped cross-section, said connection plate extending from an outer surface of one of said side plates to an outer surface of the other of said side plates; and an ejection mark made by an ejection pin during moulding which at least partially extends an end surface of said connection plate into said outer surface of said respective side plate, said ejection mark being elongated, having a width substantially identical to a thickness of said connection plate, juxtapositioned to where said side plates join with said connection plate, referred to as a connection portion.
Claim 2
Dependent Claim
150 words
A shutter, molded of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk, said shutter comprising: a pair of side plates facing each other; a connection plate for connecting corresponding ends of said side plates to provide said shutter with a substantially U-shaped cross-section, said connection plate extending from an outer surface of one of said side plates to an outer surface of the other of said side plates; and an ejection mark made by an ejection pin during moulding which at least partially extends an end surface of said connection plate into said outer surface of said respective side plate, said ejection mark being elongated, having a width substantially identical to a thickness of said connection plate, juxtapositioned to where said side plates join with said connection plate, referred to as a connection portion.
Claim 3
Dependent Claim
38 words
A shutter according to claim 1, wherein said connection plate has opposite edges, one on which a shutter opening member of a recording/reproducing apparatus is adapted to abut; and the other on which a gate mark is provided.
Claim 4
Dependent Claim
112 words
A shutter, made of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk, said shutter comprising: a pair of side plates facing to each other; a connection plate for connecting corresponding ends of said side plates to provide said shutter with a substantially U-shaped cross-section; a first edge on which a shutter opening member of a recording/reproducing apparatus is adapted to abut, said first edge being provided with a first gate mark; and a second edge opposite to said first edge, said second edge being provided with a second gate mark larger than said first gate mark.
Claim 5
Dependent Claim
112 words
A shutter, made of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk, said shutter comprising: a pair of side plates facing to each other; a connection plate for connecting corresponding ends of said side plates to provide said shutter with a substantially U-shaped cross-section; a first edge on which a shutter opening member of a recording/reproducing apparatus is adapted to abut, said first edge being provided with a first gate mark; and a second edge opposite to said first edge, said second edge being provided with a second gate mark larger than said first gate mark.
Claim 6
Dependent Claim
40 words
A shutter according to claim 3, further including a guide claw for guiding the movement of said shutter, said guide claw being projected from an inner surface of at least one of said side plates, juxtapositioned to said connection plate.
Claim 7
Dependent Claim
27 words
A shutter according to claim 3, further including a guide claw for guiding the movement of said shutter, projected from an inner surface of said connection plate.
Claim 8
Dependent Claim
17 words
A disk cartridge on which a shutter according to any of claims 3 to 5 is mounted.
Claim 9
Dependent Claim
151 words
A shutter, moulded of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk, said shutter comprising: p1 a pair of side plates facing each other; a connection plate for connecting corresponding ends of said side plates to provide said shutter with a substantially U-shaped cross-section, said connection plate extending from an outer surface of one of said side plates to an outer surface of the other of said side plates; and an ejection mark made by an ejection pin during moulding which at least partially extends an end surface of said connection plate into said outer surface of said respective side plate said ejection mark being elongated, having a width substantially identical to a thickness of said connection plate, juxtapositioned to where said side plates join with said connection plate, referred to as a connection portion.
Claim 10
Dependent Claim
151 words
A shutter, moulded of synthetic resin, for a disk cartridge for closing and opening a head access hole formed in a cartridge casing accommodating therein a rotatable disk, said shutter comprising: p1 a pair of side plates facing each other; a connection plate for connecting corresponding ends of said side plates to provide said shutter with a substantially U-shaped cross-section, said connection plate extending from an outer surface of one of said side plates to an outer surface of the other of said side plates; and an ejection mark made by an ejection pin during moulding which at least partially extends an end surface of said connection plate into said outer surface of said respective side plate said ejection mark being elongated, having a width substantially identical to a thickness of said connection plate, juxtapositioned to where said side plates join with said connection plate, referred to as a connection portion.
References Cited (Backward Citations)
US4589105A
Cited
EP0160538A2
Cited
US4698714A
Cited
US4797770A
Cited
EP0201870A2
Cited
US4714973A
Cited
EP0202660A2
Cited
EP0236100A1
Cited
US4908726A
Cited
US4746013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-01-27 | 1995-07-29 | 1996-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-27 | 1999-07-29 | 2000-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-27 | 2003-07-29 | 2004-01-28 | $7700.00 | Window Closed / Lapsed |