US3700098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boxes for packaging a reel
Assignee: Individual
•
Filing: 1971-06-22
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Granted: 1972-10-24
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Expires: 1991-06-22
Abstract
Abstract This invention relates to a box for the packaging of a reel of cinematographic film, magnetic tape or the like, comprising a body and a cover unitary with means provided for centering the reel and in which there is incorporated a locking device comprising an expansible means and a rotary actuation cam, wherein the expansible means comprises at least three flexible blades extending freely in directions substantially parallel to the axis of rotation of the cam rotatably mounted in one of the bosses, the base of each blade is immobilized in this first boss, the free end of each blade bears against the cam and has an outwardly projecting tooth and the second boss defines a central opening bordered by a truncated seat converging towards the first boss and against which the teeth of said blades may be pressed by the cam in order to provoke, at the same time as the locking of the cover on the body, the mutual bringing together of these latter in order to tighten the reel.
Inventors
- 👤 Pierre A Posso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:50
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/027; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B21/321; G03B21/323
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
167 words
Box for the packaging of a reel of cinematographic film, magnetic tape or the like, comprising a body and a cover unitary with means provided for centering the reel and in which there is incorporated a locking device comprising an expansible means and a rotary actuation cam, wherein the expansible means comprises at least three flexible blades extending freely in directions substantially parallel to the axis of rotation of the cam rotatably mounted in one of the bosses, the base of each blade is immobilized in this first boss, the free end of each blade bears against the cam and has an outwardly projecting tooth and the second boss defines a central opening bordered by a truncated seat converging towards the first boss and against which the teeth of said blades may be pressed by the cam in order to provoke, at the same time as the locking of the cover on the body, the mutual bringing together of these latter in order to tighten the reel.
Claim 2
Dependent Claim
167 words
Box for the packaging of a reel of cinematographic film, magnetic tape or the like, comprising a body and a cover unitary with means provided for centering the reel and in which there is incorporated a locking device comprising an expansible means and a rotary actuation cam, wherein the expansible means comprises at least three flexible blades extending freely in directions substantially parallel to the axis of rotation of the cam rotatably mounted in one of the bosses, the base of each blade is immobilized in this first boss, the free end of each blade bears against the cam and has an outwardly projecting tooth and the second boss defines a central opening bordered by a truncated seat converging towards the first boss and against which the teeth of said blades may be pressed by the cam in order to provoke, at the same time as the locking of the cover on the body, the mutual bringing together of these latter in order to tighten the reel.
Claim 3
Dependent Claim
94 words
Box as claimed in claim 1, wherein the bases of the flexible blades are connected together in order to form a washer, the monolithic piece thus obtained is made of moulded plastics material and the washer is interposed, for holding the bases of the blades between an inner shoulder of a tubular lug of the first boss and a cover mounted to rotate about this lug in which longitudinal grooves are made for the free passage of the flexible blades, these blades being in abutment on the cam rendered coaxially unitary with the cover.
Claim 4
Dependent Claim
37 words
Box as claimed in claim 2, wherein the above-mentioned washer has elements for starting a rupture between the bases of the blades in order that said latter become distinct from each other after assembly of the cam.
Claim 5
Dependent Claim
17 words
Box as claimed in claim 1, wherein the at least flexible blades are made of polyformol resin.
Claim 6
Dependent Claim
75 words
Box as claimed in claim 1, wherein the rotary cam positively controls the locking and presents, in order to cooperate with each flexible blade, an inclined ramp applied against the inner surface of this latter and the outer surface of each tooth has two chamfers converging towards the periphery, the terminal centering chamfer being inclined in opposite direction to the holding chamfer, whose slope corresponds to that of the truncated seat of the second boss.
Claim 7
Dependent Claim
48 words
Box as claimed in claim 1, wherein the rotary cam positively control the locking and unlocking and has, in order to cooperate with each flexible blade, actuation elements constituted in particular by an inner inclined ramp and an outer inclined ramp shifted angularly with respect to each other.
Claim 8
Dependent Claim
44 words
Box as claimed in claim 6, wherein another actuation element cooperating with each flexible blade is constituted by a locking notch in closed position, this notch extending the inner inclined ramp at its end furthest away from the axis of rotation of the cam.
Claim 9
Dependent Claim
52 words
Box as claimed in claim 6, wherein another actuation element cooperating with each flexible blade is constituted by an arcuate area for holding in opened position, this area being substantially concentric to the axis of rotation of the cam and extending the outer inclined ramp at its end closest to this axis.
Claim 10
Dependent Claim
78 words
Box as claimed in claim 6, wherein the rotary cam defines frontal hollows in which are engaged catches inwardly extending the extreme teeth of the flexible blades, the inner and outer sides of the hollows presenting the above mentioned actuation elements in orDer to control the catches and therefore the bending of the blades and the ends of at least one hollow cooperate with the corresponding catch by abutment in order to limit the rotation of the cam.
Claim 11
Dependent Claim
35 words
Box as claimed in claim 9, wherein the base of the cam defining the above-mentioned hollows covers by its circular contour the teeth of the flexible blades in open position and has a centering chamfer.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |