US3802157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerodynamic bag opening apparatus
Assignee: Individual
•
Filing: 1972-03-02
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Granted: 1974-04-09
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Expires: 1992-03-02
Abstract
Abstract A body member has first and second surfaces which intersect, air being directed from the second surface across the intersection aerodynamically to form a region of reduced pressure above the first surface adjacent to the intersection. The first surface of the body member is adapted to receive at least one flat unopened bag the closed edges of which are opened by the region of reduced pressure to intercept the air directed from the second surface.
Inventors
- 👤 J Elms
- 👤 D Clouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:41
CPC Classifications
B; B65; B65B; B65B43/00; B65B43/26; B65B43/34; B65B43/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
169 words
Apparatus for opening bags comprising: a body member having at least first, second and third surfaces, said third surface having an opening therein which communicates with said second surface and through which opening moving air may be directed to said second surface, said first and second surfaces intersecting across which intersection moving air may be directed aerodynamically from said second surface to form a region of reduced pressure above said first surface adjacent said intersection, said second surface being shaped to receive and direct moving air adjacent thereto toward said intersection, said first surface being shaped to receive at least one flat unopened bag, the edges of which are separated and opened by said region of reduced pressure; means attached to said body member for moving air through said opening in said third surface to said second surface; and means attached to said second surface for directing air from said opening in said third surface across said second surface towards said intersection to form said region of reduced pressure.
Claim 2
Dependent Claim
169 words
Apparatus for opening bags comprising: a body member having at least first, second and third surfaces, said third surface having an opening therein which communicates with said second surface and through which opening moving air may be directed to said second surface, said first and second surfaces intersecting across which intersection moving air may be directed aerodynamically from said second surface to form a region of reduced pressure above said first surface adjacent said intersection, said second surface being shaped to receive and direct moving air adjacent thereto toward said intersection, said first surface being shaped to receive at least one flat unopened bag, the edges of which are separated and opened by said region of reduced pressure; means attached to said body member for moving air through said opening in said third surface to said second surface; and means attached to said second surface for directing air from said opening in said third surface across said second surface towards said intersection to form said region of reduced pressure.
Claim 3
Dependent Claim
36 words
The apparatus for opening bags described in claim 1 wherein said directing means has an edge which produces turbulence in the moving air deflected thereby to enhance the aerodynamic formation of said region of reduced pressure.
Claim 4
Dependent Claim
80 words
The apparatus for opening bags described in claim 2 wherein said first surface further includes two longitudinal depressions therein located perpendicular to said intersection and spaced to receive the longitudinal edges of the multiplicity of layered flat unopened bags whereby the extra thickness of the bag edges is offset to maintain the topmost layers of bag substantially flat to prevent the edges of the bags underneath the topmost bag from intercepting the direct air flow and being prematurely opened thereby.
Claim 5
Dependent Claim
28 words
The apparatus for opening bags described in claim 3 further including means to receive and hold on said body member a wicket engaging layers of flat unopened bags.
Claim 6
Dependent Claim
56 words
The apparatus for opening bags described in claim 3 further including a hinge having one leaf thereof fastened to said second surface adjacent said intersection and having a movable leaf biased to clamp and hold the edges of a multiplicity of layered unopened bags adjacent the openings thereof which may be placed upon said first surface.
Claim 7
Dependent Claim
85 words
The apparatus for opening bags described in claim 5 wherein said movable leaf of said hinge has the outermost portions thereof formed at an angle with respect to a center portion of the leaf so that the center portion of the leaf engages and clamps the multiplicity of layered bags to the first surface and the outermost portions of the leaf do not engage the bags whereby the corners of the topmost bag adjacent said intersection are free to lift when the bag is opened.
Claim 8
Dependent Claim
57 words
The apparatus for opening bags described in claim 5 further including an opening in the central region of said movable leaf of said hinge to enhance the opening of bags clamped thereunder by permitting the edge of the bag opening to directly intercept the flow of air after being aerodynamically lifted by said region of reduced pressure.
Claim 9
Dependent Claim
28 words
The apparatus for opening bags described in claim 7 further including pins mounted on said first surface adjacent said intersection upon which bags may be engaged and held.
Claim 10
Dependent Claim
27 words
The apparatus for opening bags described in claim 7 further including projections mounted on said movable leaf of said hinge to engage and hold bags clamped thereunder.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |