Patent US6094478A successfully refreshed from Google Patents.
Patent US4083472A successfully refreshed from Google Patents.
US4083472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape cartridge with hinged housing sections
Assignee: 3M Co
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Filing: 1975-12-04
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Granted: 1978-04-11
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Expires: 1995-12-04
Abstract
Abstract An improved video tape cartridge having a housing formed in two sections that are pinned together at two hinged knuckle joints by means of removable hinge pins. Each knuckle joint is defined by knuckle members formed on each housing section. Each hinge pin is shaped with a long bent end portion that is directed through one of the knuckle members to be journaled in an aperture in the other of the knuckle members, and an opposite end portion that is held in place by a rib near such other knuckle member.
Inventors
- 👤 John L. Wharam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:04
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
209 words
A video tape cartridge that includes a housing for a pair of spaced apart reels in a parallel relationship to one another, which housing is formed of a first housing section and a second housing section that are connected together by at least one knuckle joint comprising: a male knuckle member that has an open center and protrudes from the sidewall of one of said housing sections; a channel shaped female knuckle member formed in a sidewall of the other of said housing sections to receive said male knuckle member, said female knuckle member having two sidewalls that each include an aperture therethrough; an abutment spaced apart from said female knuckle member in a position adjacent one of its sidewalls with at least a portion of said abutment offset from the apertures in the sidewalls of said female knuckle member; a hinge pin having one terminal end portion extending through the open center of said male knuckle member and journaled in the apertures of said female knuckle member and an opposite terminal end portion lodged against the offset portion of said abutment in such fashion that said pin is maintained under tension in a partially bent condition to securely hold said pin in position connecting said knuckle members together.
Claim 2
Dependent Claim
209 words
A video tape cartridge that includes a housing for a pair of spaced apart reels in a parallel relationship to one another, which housing is formed of a first housing section and a second housing section that are connected together by at least one knuckle joint comprising: a male knuckle member that has an open center and protrudes from the sidewall of one of said housing sections; a channel shaped female knuckle member formed in a sidewall of the other of said housing sections to receive said male knuckle member, said female knuckle member having two sidewalls that each include an aperture therethrough; an abutment spaced apart from said female knuckle member in a position adjacent one of its sidewalls with at least a portion of said abutment offset from the apertures in the sidewalls of said female knuckle member; a hinge pin having one terminal end portion extending through the open center of said male knuckle member and journaled in the apertures of said female knuckle member and an opposite terminal end portion lodged against the offset portion of said abutment in such fashion that said pin is maintained under tension in a partially bent condition to securely hold said pin in position connecting said knuckle members together.
Claim 3
Dependent Claim
21 words
A tape cartridge as recited in claim 1 wherein said opposite terminal end portion is bent and hooked about said abutment.
Claim 4
Dependent Claim
49 words
A tape cartridge as recited in claim 1 wherein the apertures of said female knuckle member sidewalls include a V-shaped notch in each sidewall and a port at the base of one of said notches, and said one terminal end portion of said hinge pin extends through said port.
References Cited (Backward Citations)
US3756329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-04-10 | 1981-10-10 | 1982-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-10 | 1985-10-10 | 1986-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-10 | 1989-10-10 | 1990-04-11 | $7700.00 | Window Closed / Lapsed |