Patent US3827847A successfully refreshed from Google Patents.
US3827847A
Expired / Lapsed
US
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Apparatus for forming box-like article and lid therefor
Assignee: Individual
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Filing: 1973-02-02
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Granted: 1974-08-06
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Expires: 1993-02-02
Abstract
Abstract Apparatus for forming in one operation a molded article having box-like sides such as a concrete meter box, and a molded covering lid therefor. A cavity in the shape of connected sides of a box is formed between an inner form and a surrounding outer form. An open top lid form rests on the top of the inner form, its outside surface extending out beyond the top of the inner form to define a shoulder and an upper extension of the cavity. The cavity and the lid form are filled with a settable material and vibrated. A power unit then raises the box-like article by engaging a pallet beneath the article at the bottom of the cavity, the box-like article being capable of carrying the lid form upwardly with it by engagement of the finished article with the shoulder of the lid form.
Inventors
- 👤 L Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:57
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/08; B28B1/093; B28B1/0935; B28B13/00; B28B13/04; B28B13/06; B28B7/00; B28B7/0029; B28B7/0035; B28B7/0038
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
254 words
An apparatus for making a molded article having box-like sides and a molded lid which is matable therewith comprising: an inner form having outwardly facing side walls, an outer form surrounding the inner form and forming with the outwardly facing side walls of the inner form a cavity in the shape of connected sides of a bos, the upper edges of the outer form extending up to a height greater than the height of the inner form, and an open top lid form having a bottom located on top of the inner form, at least a part of said bottom extending outwardly beyond the outer periphery of the top of the inner form, and said lid form including side walls extending upwardly from the outer periphery of said bottom, at least a portion of the outside surface of the lid form being spaced inwardly from the inside of the outer form to define therewith an upper extension of the said cavity which is formed between the inner and outer forms, whereby while filling both the said cavity and the lid form the article with the box-like sides and the mating lid therefor can be formed in a single molding operation, said inner form including means for forming an opening through the lid to be formed, said forming means including means for mounting a door in said lid, said door being positioned such that it forms an openable door over the opening through the lid to be formed, and is permanently attached to the lid.
Claim 2
Independent Claim
254 words
An apparatus for making a molded article having box-like sides and a molded lid which is matable therewith comprising: an inner form having outwardly facing side walls, an outer form surrounding the inner form and forming with the outwardly facing side walls of the inner form a cavity in the shape of connected sides of a bos, the upper edges of the outer form extending up to a height greater than the height of the inner form, and an open top lid form having a bottom located on top of the inner form, at least a part of said bottom extending outwardly beyond the outer periphery of the top of the inner form, and said lid form including side walls extending upwardly from the outer periphery of said bottom, at least a portion of the outside surface of the lid form being spaced inwardly from the inside of the outer form to define therewith an upper extension of the said cavity which is formed between the inner and outer forms, whereby while filling both the said cavity and the lid form the article with the box-like sides and the mating lid therefor can be formed in a single molding operation, said inner form including means for forming an opening through the lid to be formed, said forming means including means for mounting a door in said lid, said door being positioned such that it forms an openable door over the opening through the lid to be formed, and is permanently attached to the lid.
Claim 3
Independent Claim
311 words
An apparatus for making a molded article having boxlike sides and a molded lid which is matable therewith comprising: an inner form having outwardly facing side walls, an outer form surrounding the inner form and forming with the outwardly facing side walls of the inner form a cavity in the shape of connected sides of a box, the upper edges of the outer form extending up to a height greater than the height of the inner form, and an open top lid form having a bottom located on top of the inner form, at least a part of said bottom extending outwardly beyond the outer periphery of the top of the inner form, and said lid form including side walls extending upwardly from the outer periphery of said bottom, at least a portion of the outside surface of the lid form being spaced inwardly from the inside of the outer form to define therewith an upper extension of the said cavity which is formed between the inner and outer forms, whereby, while filing both the said cavity and the lid form the article with the box-like sides and the mating lid therefor can be formed in a single molding operation, said inner form including means for forming an opening through the lid to be formed, said inner form including a raised portion which is raised upwardly from the top of the inner form, said lid form having an opening in its bottom shaped to fit over the said raised portion when the lid form is placed onto the top of the inner form, said raised portion being positioned to form the said opening through the lid which is to be formed, said raised portion including means for mounting a door therein such that in the finished lid the door is permanently connected to the lid and openably covers the opening therethrough.
Claim 4
Independent Claim
311 words
An apparatus for making a molded article having boxlike sides and a molded lid which is matable therewith comprising: an inner form having outwardly facing side walls, an outer form surrounding the inner form and forming with the outwardly facing side walls of the inner form a cavity in the shape of connected sides of a box, the upper edges of the outer form extending up to a height greater than the height of the inner form, and an open top lid form having a bottom located on top of the inner form, at least a part of said bottom extending outwardly beyond the outer periphery of the top of the inner form, and said lid form including side walls extending upwardly from the outer periphery of said bottom, at least a portion of the outside surface of the lid form being spaced inwardly from the inside of the outer form to define therewith an upper extension of the said cavity which is formed between the inner and outer forms, whereby, while filing both the said cavity and the lid form the article with the box-like sides and the mating lid therefor can be formed in a single molding operation, said inner form including means for forming an opening through the lid to be formed, said inner form including a raised portion which is raised upwardly from the top of the inner form, said lid form having an opening in its bottom shaped to fit over the said raised portion when the lid form is placed onto the top of the inner form, said raised portion being positioned to form the said opening through the lid which is to be formed, said raised portion including means for mounting a door therein such that in the finished lid the door is permanently connected to the lid and openably covers the opening therethrough.
Claim 5
Dependent Claim
75 words
An apparatus according to claim 2, wherein said means for mounting the door includes a set of aligned upwardly opened slots formed in the raised portion, said door having a pivot pin locatable in said aligned slots and having outer portions extending horizontally out beyond the outer periphery of the raised portion whereby when the finished lid is removed from the lid form, the outer portions of the pivot pin remain embedded in the lid.
Claim 6
Dependent Claim
67 words
An apparatus according to claim 3, including a holding means for holding the door against the top of the raised portion, said holding means comprising a bolt engageable against the top of the door and threadedly engageable through the raised portion with the top of the inner form, and a hold down bar attached to the outer form and held tightly against the top of the door.
Claim 7
Dependent Claim
50 words
An apparatus according to claim 1, said outer form being a tubular member of polygonal cross-section, said inner form being of frustro-pyramidal cross-section, the bottoms of the inner and outer forms being spaced apart and including a pallet in the cavity between the bottoms of the inner and outer forms.
Claim 8
Dependent Claim
57 words
An apparatus according to claim 5, said lid form bottom extending out beyond the top of the inner form all about the periphery of the latter, whereby the finished article having box-like sides will have a horizontal ledge formed therein by the outwradly projecting part of the lid form, on which ledge the finished lid can rest.
Claim 9
Dependent Claim
86 words
An apparatus according to claim 1 including: a base, said inner and outer forms mounted on said base, a pallet ring locatable at the bottom of said cavity such that the article is formed thereon, and a lifting means for lifting the pallet ring up into and through the cavity, whereby when the finished article is self-supporting, saId lifting means lifts the article upwardly through and out of the mold, the article being capable of carrying upwardly with it the lid form with the lid therein.
Claim 10
Dependent Claim
51 words
An apparatus according to claim 7, said lifting means including a power piston and cylinder unit on the base, a set of vertical rods operatively connected to the piston and cylinder unit for vertical movement therewith, the upper ends of said rods being located against the bottom of the pallet ring.
Claim 11
Dependent Claim
26 words
An apparatus according to claim 7, including connecting means for connecting said inner and outer forms to the base, said connecting means including shock absorbing means.
Claim 12
Dependent Claim
71 words
An apparatus according to claim 7, including means for vibrating the inner form, said base including a cut-out table top, a cut-out platform connected to the table top and spaced thereabove by shock absorbing members, said outer form being fixed to said platform, support rods connected to the platform and extending across the cut-out opening therein, and a shock absorbing connecting means for connecting the inner form to the support rods.
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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |