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US3595433A Expired / Lapsed US ⏱️ 0.0 years remaining

Card files with a drop front

Assignee: G J AIGNER CO
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Filing: 1969-04-25
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Granted: 1971-07-27
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Expires: 1989-04-25
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Abstract

Abstract A filing case is formed as a unitary resilient, or flexible, plastic structure. A forward-swinging or dropfront panel is released when the filing case is opened, thereby making the contents readily accessible. All components of the case, including cover, panel, and hinges, are molded as an assembled structure from one mass of resilient plastic material. The cover and front panel are each formed in an open position so as to bias these elements in that position.

Inventors

  • 👤 Charles E Jones
  • 👤 Joseph H Gruenhut

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 14:33
CPC Classifications
B; B65; B65D; B65D45/00; B65D45/02; B65D45/16; B42; B42F; B42F17/00; B42F17/02; B42F17/08; B65D25/00

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 218 words
In a one-piece dropfront container for use as a filing case or the like, and including A. body having contiguous bottom, rear, and a pair of side panels, B. a cover integrally hinged to the top of said rear panel, and having contiguous top, front, rear, and a pair of side panels, C. a forward swinging front panel integrally hinged to the front of said bottom panel, with a pair of guide tabs contiguous with said first panel and extending into said body adjacent said side panels, and D. means cooperating with said guide tabs for permitting limited forward movement of said front panel, said body, cover, hinges, guide tabs, and limited movement means being integrally formed as a unitary structure of resilient plastic material, the improvement comprising: 1. a first, inwardly extending, latch integral with said cover, said latch being manually liftable when said front panel and said cover are in closed position, and 2. a second, outwardly extending, latch integral with said front panel and matable with said first latch when said cover and said front panel are both in closed position, so that either outward lifting of said first latch or inward pressure on said front panel disengages said latches and permits said cover to be opened and said front panel to be swung outward.
Claim 2
Dependent Claim 218 words
In a one-piece dropfront container for use as a filing case or the like, and including A. body having contiguous bottom, rear, and a pair of side panels, B. a cover integrally hinged to the top of said rear panel, and having contiguous top, front, rear, and a pair of side panels, C. a forward swinging front panel integrally hinged to the front of said bottom panel, with a pair of guide tabs contiguous with said first panel and extending into said body adjacent said side panels, and D. means cooperating with said guide tabs for permitting limited forward movement of said front panel, said body, cover, hinges, guide tabs, and limited movement means being integrally formed as a unitary structure of resilient plastic material, the improvement comprising: 1. a first, inwardly extending, latch integral with said cover, said latch being manually liftable when said front panel and said cover are in closed position, and 2. a second, outwardly extending, latch integral with said front panel and matable with said first latch when said cover and said front panel are both in closed position, so that either outward lifting of said first latch or inward pressure on said front panel disengages said latches and permits said cover to be opened and said front panel to be swung outward.
Claim 3
Dependent Claim 128 words
a second outwardly extending latch integral with said front panel mating with said first latch when said cover and said front panel are both in closed positions, and D. a pair of flaps cooperating with said guided tabs integrally hinged to the tops of said side panels and foldable inwardly of said body, and a pair of inwardly facing projections on said flaps to provide a movement limiting abutment for said guide tabs, said body, cover front panel, hinges, Guide tabs, latches, and limited movement means being integrally formed as a unitary structure of resilient plastic material, so that lifting of said first latch or pressure on said front panel disengages said latches and permits the cover to be opened and said front panel to be swung outward.
Claim 4
Dependent Claim 128 words
a second outwardly extending latch integral with said front panel mating with said first latch when said cover and said front panel are both in closed positions, and D. a pair of flaps cooperating with said guided tabs integrally hinged to the tops of said side panels and foldable inwardly of said body, and a pair of inwardly facing projections on said flaps to provide a movement limiting abutment for said guide tabs, said body, cover front panel, hinges, Guide tabs, latches, and limited movement means being integrally formed as a unitary structure of resilient plastic material, so that lifting of said first latch or pressure on said front panel disengages said latches and permits the cover to be opened and said front panel to be swung outward.
Claim 5
Dependent Claim 23 words
a first, inwardly extending, latch integral with said cover, C. a front panel integrally hinged to the front of said bottom panel, with
Claim 6
Dependent Claim 23 words
a first, inwardly extending, latch integral with said cover, C. a front panel integrally hinged to the front of said bottom panel, with
Claim 7
Dependent Claim 33 words
Container of claim 1 wherein said structure is formed with said cover and said front panel in open positions so that said hinges bias said cover and said front panel in open positions.
Claim 8
Dependent Claim 62 words
a second, outwardly extending, latch integral with said front panel and matable with said first latch when said cover and said front panel are both in closed position, so that either outward lifting of said first latch or inward pressure on said front panel disengages said latches and permits said cover to be opened and said front panel to be swung outward.
Claim 9
Dependent Claim 62 words
a second, outwardly extending, latch integral with said front panel and matable with said first latch when said cover and said front panel are both in closed position, so that either outward lifting of said first latch or inward pressure on said front panel disengages said latches and permits said cover to be opened and said front panel to be swung outward.
Claim 10
Dependent Claim 11 words
Container of claim 1 wherein said resilient plastic comprises isotactic polypropylene.
Claim 11
Dependent Claim 52 words
Container of claim 1 wherein said limited movement means comprises a pair of channel elements near the tops of said side panels and inwardly of said body, said channel elements being contiguous with said side panels and with said rear panel, said channel elements providing a movement-limiting abutment for said guide tabs.
Claim 12
Dependent Claim 36 words
Container of claim 1 wherein said limited movement means comprises a pair of projections on the inwardly facing sides of said side panels near the top thereof to provide a movement-limiting abutment for said guide tabs.
Claim 13
Dependent Claim 42 words
Container of claim 1 wherein said limited movement means comprises a pair of outwardly extending projections on said side panels, and a pair of inwardly extending flanges along the front edges of said side panels to provide movement-limiting abutments for said projections.
Claim 14
Dependent Claim 41 words
Container of claim 1 wherein said hinge connecting said cover and said body comprises a pair of tapered flanges extending outwardly of the rear panels of said cover and said body, the intersection of said flanges being of relatively thin material.
Claim 15
Dependent Claim 40 words
A one-piece dropfront container for use as a filing case or the like comprising: A. a body having contiguous bottom, rear, and a pair of side panels, B. a cover integrally hinged to the top of said rear panel, with
Claim 16
Dependent Claim 40 words
A one-piece dropfront container for use as a filing case or the like comprising: A. a body having contiguous bottom, rear, and a pair of side panels, B. a cover integrally hinged to the top of said rear panel, with

References Cited (Backward Citations)

US3127225A Cited
US1845842A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-07-26 1975-01-25 1975-07-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-26 1979-01-25 1979-07-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-26 1983-01-25 1983-07-27 $7700.00 Window Closed / Lapsed

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