Patent US3563426A successfully refreshed from Google Patents.
US3563426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic container top with combination closure and sprinkler
Assignee: Morton International LLC
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Filing: 1969-07-03
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Granted: 1971-02-16
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Expires: 1989-07-03
Abstract
Abstract This low-cost, one-piece integrally molded plastic container top for containers of particulate substances such as salt features a wall member having an opening with a hingedly-attached cover and a recessed perforated sprinkler plate across the opening. Access openings for mold parts adjacent the sprinkler plate are effectively sealed against undesired leakage by a snap flap molded substantially normal to said sprinkler plate and flexed athwart said opening.
Inventors
- 👤 Benjamin M Bartilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:11
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/06; B65D47/08; B65D47/0804; B65D47/0833; B65D47/0847
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
177 words
A one-piece molded plastic closure and sprinkler device for particulate materials comprising: a. a wall member having an opening therethrough and securing means adjacent peripheral portions thereof for attachment to another wall portion of a vessel b. a cover for said opening integrally molded in an upstanding position to said wall member along one side of said opening by means of a thinned section, whereby said cover can be hingedly flexed along said thinned section from said upstanding molded position to a closed position; c. a perforated plate integrally molded to inner surfaces of said wall member and extending substantially across said opening and terminating in spaced relation from said one side, whereby an access space is provided for mold portions associated with said cover; and d. flap means molded substantially normal to the plane of a sprinkler plate and dimensioned and disposed relative to the access space to be flexed athwart thereto and snapped into nonmovable sealing engagement with the opposed side of the access space so as to substantially seal the same against granular flow.
Claim 2
Dependent Claim
177 words
A one-piece molded plastic closure and sprinkler device for particulate materials comprising: a. a wall member having an opening therethrough and securing means adjacent peripheral portions thereof for attachment to another wall portion of a vessel b. a cover for said opening integrally molded in an upstanding position to said wall member along one side of said opening by means of a thinned section, whereby said cover can be hingedly flexed along said thinned section from said upstanding molded position to a closed position; c. a perforated plate integrally molded to inner surfaces of said wall member and extending substantially across said opening and terminating in spaced relation from said one side, whereby an access space is provided for mold portions associated with said cover; and d. flap means molded substantially normal to the plane of a sprinkler plate and dimensioned and disposed relative to the access space to be flexed athwart thereto and snapped into nonmovable sealing engagement with the opposed side of the access space so as to substantially seal the same against granular flow.
Claim 3
Dependent Claim
47 words
The device of claim 1 wherein said flap means is integrally molded to a thinned extension of said perforated plate adjacent said access space, said thinned extension permitting said flap to be flexed so that the opposed extremity of said flap is engaged adjacent said one side.
Claim 4
Dependent Claim
57 words
The device of claim 1 including a plurality of depending transverse webs on the inner surface of said wall member and wherein said flap means is integrally molded as an extension of one of said webs whereby the extremity of said flap engages another of said webs when flexed athwart said access space to seal the same.
Claim 5
Dependent Claim
20 words
The device of claim 1 including recess and complementary detent means for releasably securing said cover in a closed position.
Claim 6
Dependent Claim
34 words
The device of claim 1 wherein peripheral portions of said cover member when in the closed position project beyond said wall member whereby said peripheral portions can be digitally engaged for opening said cover.
Claim 7
Dependent Claim
14 words
The device of claim 5 wherein said peripheral portions comprise a central projecting tab.
Claim 8
Dependent Claim
30 words
The device of claim 1 wherein said securing means comprises a depending flange with enlarged engageable surfaces adjacent the lower extremity thereof for snap fitting said device to a vessel.
Claim 9
Dependent Claim
36 words
The device of claim 1 wherein substantially all surfaces are engageable by dual mold cavities approaching from two opposite directions when said cover and said flap means are disposed in planes normal to said wall member.
Claim 10
Dependent Claim
15 words
The device of claim 1 wherein said apparatus is integrally molded of high density polyethylene.
Claim 11
Dependent Claim
31 words
The device of claim 1 wherein said wall member is substantially flat and the exterior surface of said cover is substantially coplanar therewith when said cover is in the closed position.
References Cited (Backward Citations)
US3409188A
Cited
US3499588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |