Patent US2592678A successfully refreshed from Google Patents.
Patent EP0094087A1 successfully refreshed from Google Patents.
EP0094087A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Recording tape cartridge
Assignee: Maxell Ltd
•
Filing: 1983-05-11
•
Granted: —
•
Expires: 2003-05-11
Abstract
Abstract In a recording tape cartridge having a front lid member (9) movable between a closed position for protecting a recording tape (2) and an opened position and a dust cover (12) movable with the front lid member (9) for defining a tape accommodating space therebetween, the lower end portion of the dust cover (12) has a closing portion (19) extending below the lower end of the front lid member (9) when the front lid member is in the closed position so that dust or foreign matters are prevented from entering the tape accommodating space through the gap between the front lid member (9) and the dust cover (12).
Inventors
- 👤 Shinichi Goto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:03
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08735; G11B23/08785
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A recording tape cartridge comprising a cartridge case (1) for accommodation of a recording tape (2) with its intermediate part extending along the front face of the cartridge case, a front lid member (9) mounted to the front portion of the cartridge case (1), said front lid member (9) being movable between a closed position and an opened position and a dust cover means (12) movable with the front lid member mounted parallely with the front lid member (9) with the lower end portion thereof being located close to the lower end of the front lid member to form closing means for enclosing the lower end portion of the recording tape (2) when the front lid member is in a closed position, said closing means being formed in such a manner that the lower end portion (12b) of the dust cover means (12) extends at least up to a position opposing to the lower end surface (10b) of the front lid member below thereof when the front lid member (9) is in the closed position.
Claim 2
Dependent Claim
175 words
A recording tape cartridge comprising a cartridge case (1) for accommodation of a recording tape (2) with its intermediate part extending along the front face of the cartridge case, a front lid member (9) mounted to the front portion of the cartridge case (1), said front lid member (9) being movable between a closed position and an opened position and a dust cover means (12) movable with the front lid member mounted parallely with the front lid member (9) with the lower end portion thereof being located close to the lower end of the front lid member to form closing means for enclosing the lower end portion of the recording tape (2) when the front lid member is in a closed position, said closing means being formed in such a manner that the lower end portion (12b) of the dust cover means (12) extends at least up to a position opposing to the lower end surface (10b) of the front lid member below thereof when the front lid member (9) is in the closed position.
Claim 3
Dependent Claim
39 words
The recording tape cartridge according to claim 1, wherein said closing means are formed by inclined faces (19b,20b) formed on the respective lower end surfaces (12b,10b) of the lid member (9) and the dust cover means (12) (Figs. 9,12,14).
Claim 4
Dependent Claim
67 words
The recording tape cartridge according to claim 1, wherein said closing means are formed by a concavity (21) having a stepped configuration (12f) in cross section and defined in the lower end portion of the lid member (9) and a stepped portion formed in the lower end portion of the dust cover means (12) for engagement in the concavity of the lid member (9) (Figs. 10, 15).
Claim 5
Dependent Claim
77 words
The recording tape cartridge according to claim 1, wherein said closing means are formed by a concavity (19) in the form of round recess (19b,19c) in cross section defined in the lower end portion of the lid member (9) and a projection (23,12g) in a semicircular configuration in cross section and formed in the lower end surface of the dust cover means (12) to be engageable in the recess (19b,19c) of the lid member (9) (Figs. 11,16).
Claim 6
Dependent Claim
38 words
The recording tape cartridge according to claim 1, wherein said closing means are formed by a closing plate (12e) extending horizontally below the lower end of the front lid member (9) from the dust cover (12) (Fig. 13).
References Cited (Backward Citations)
EP0052479A2
Cited
FR2508223A1
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.