US3677495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape retaining reel cartridge
Assignee: Ampex Corp
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Filing: 1971-03-05
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Granted: 1972-07-18
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Expires: 1991-03-05
Abstract
Abstract A tape retaining reel cartridge, of the type including a hub and two side flanges, has spaced lips at the periphery of each flange to retain a leader attached to tape that is wound upon the hub. The lips are staggered so that the lips of one flange axially confront the spaces between the lips of the other flange. In one embodiment the flanges have radial cuts between the lips and spaces so that the lips can flex when the leader is tripped off the reel. The tape is narrower than the leader and passes freely between the lips. The lip sectors of the flanges are relieved to increase flexibility. The flanges are formed with circumferential ledges to hold the leader axially outwardly, and portions of the flanges between the ledges and the lips are formed to sloping shape to urge the leader radially inwardly. In another embodiment, the reel is mounted inside a housing, with a stripper for the leader that permits stripping only when the housing is mounted on a suitable transport mechanism.
Inventors
- 👤 Walter H Villers
- 👤 Ernest B Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:38
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/037; G11B23/04; G11B23/08; G11B23/107
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
In a tape retaining reel cartridge of the type including a hub and a pair of side flanges having inwardly turned peripheral lip portions, tape of width less than the axial lip spacing dimension wound upon the hub, and a leader of width greater than the axial lip spacing dimension attached to the outer turn of tape, the improvement comprising: said peripheral lip portion of each side flange being serrated to define discrete lips having spaces therebetween of arcuate dimension equal to that of the lips; and the lips of the respective side flanges being staggered with respect to one another so that the lips of one side flange axially confront the arcuate spaces between the lips of the other side flange.
Claim 2
Dependent Claim
122 words
In a tape retaining reel cartridge of the type including a hub and a pair of side flanges having inwardly turned peripheral lip portions, tape of width less than the axial lip spacing dimension wound upon the hub, and a leader of width greater than the axial lip spacing dimension attached to the outer turn of tape, the improvement comprising: said peripheral lip portion of each side flange being serrated to define discrete lips having spaces therebetween of arcuate dimension equal to that of the lips; and the lips of the respective side flanges being staggered with respect to one another so that the lips of one side flange axially confront the arcuate spaces between the lips of the other side flange.
Claim 3
Dependent Claim
38 words
The combination recited in claim 1, wherein: said side flanges have radial cuts between the sector of each lip and the sectors of the adjacent arcuate spaces to permit flexing of the lips for stripping of said tape.
Claim 4
Dependent Claim
55 words
The combination recited in claim 2, wherein: said lips are rounded in a circumferential direction and are sloped radially inwardly and toward the opposite side flange to facilitate winding of the leader upon the reel, but present substantially axially directed walls on the radially inward side to oppose stripping of the leader from the reel.
Claim 5
Dependent Claim
141 words
The combination recited in claim 3, wherein: each side flange has a circumferential groove radially inwardly of said lips for retention of said leader; the bottoms of said grooves in the respective side flanges being spaced apart for a dimension on the order of the width of the leader and being continuous with the inner surface of the side flange in the regions of said angular spaces between said lips; said axially directed walls of said lips defining the radially outermost side of each of said grooves; and the radially inward side of each of said grooves being defined by an axially directed ledge for holding the leader away from the axis of said reel; the side flanges radially inwardly from said grooves being axially spaced apart for a dimension greater than said tape width but less than said leader width.
Claim 6
Dependent Claim
70 words
The combination recited in claim 4, wherein: the bottom of each of said grooves is formed to a sloping surface at least in the outward peripheral portion thereof, with said sloping surface sloping radially outwardly and toward the opposite side flange of the reel, so as to ensure frictional gripping of the edges of the leader despite variations in the width thereof or in the aXial spacing of the flanges.
Claim 7
Dependent Claim
20 words
The combination recited in claim 5, wherein: said tape is wound to a diameter equal to that of said ledge.
Claim 8
Dependent Claim
34 words
The combination recited in claim 6, wherein: said cuts between said lips and angular spaces are enlarged at the radially inward portions thereof to define a narrowed neck for each of the lip sectors.
Claim 9
Dependent Claim
35 words
The combination recited in claim 7, wherein: each of said narrowed neck portions of the lip sectors being relieved on the radially and axially inward zone thereof to increase the flexibility of said lip sectors.
Claim 10
Dependent Claim
73 words
The combination recited in claim 1, and also including: a housing enclosing said reel and adapted for mounting upon a tape transport with said hub engaged by a spindle and turntable of said transport; stripping means formed in said housing and adjustable between stripping and non-stripping conditions; and means associated with said transport for engaging and adjusting said stripping means from non-stripping to stripping condition when said housing is mounted on said transport.
Claim 11
Dependent Claim
113 words
The combination recited in claim 9, wherein: said stripping means is a resilient finger biased to a non-stripping position out of the rotational path of said leader tip; and said transport associated means includes a cam pin extending from said transport and presenting a cam face engaging said finger in the mounted position of said housing and urging said finger to a stripping position in which said finger engages said leader tip between said tip and the adjacent coil of said leader; said finger bearing resiliently against the outer turn of said leader in the stripping position so as to serve as a leader repacking means during the rewind made of said transport.
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |