US3590448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction apparatus
Assignee: Individual
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Filing: 1968-12-30
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Granted: 1971-07-06
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Expires: 1988-12-30
Abstract
Abstract An apparatus and method for the construction of circular structures of moldable materials. The apparatus comprises a first mold member having a shape and size substantially similar to one surface of said circular structure to be constructed, a second mold member spaced apart from said first mold member and substantially parallel to the surface thereof, the four edges of said second mold member intersecting at substantially right angles with one another, said second mold member having a horizontal length less than one-fourth the circumference of that portion of said first mold member adjacent said second mold member and having a vertical height less than one-fourth the vertical height of said first mold member as measured along the surface thereof, said second mold member being connected such as to permit vertical movement thereof to carrying means for horizontally moving said second mold member about the entire circumference of said first mold member while maintaining said second mold member at all times throughout such horizontal movement substantially equidistant from the surface of said first mold member.
Inventors
- 👤 Donald R Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:46
CPC Classifications
E; E04; E04G; E04G11/00; E04G11/06; E04G11/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
200 words
An apparatus for the construction of circular structures of moldable materials, said apparatus comprising a first mold member having a shape and side substantially similar to one surface of said circular structure to be constructed, a second mold member spaced apart from and outside of said first mold member and substantially parallel to the surface thereof, the four edges of said second mold member intersecting at substantially right angles with one another, said second mold membEr having a horizontal length less than one-fourth the circumference of that portion of said first mold member adjacent said second mold member and having a vertical height less than one-fourth the vertical height of said first mold member as measured along the surface thereof, said second mold member being connected to a carrying means for horizontally moving said second mold member about the entire circumference of said first mold member while maintaining said second mold member at all times throughout said horizontal movement substantially equidistant from the surface of said first mold member, said connection of said second mold member to said carrying means being such as to permit vertical movement of said second mold member along the vertical surface of said carrying means.
Claim 2
Independent Claim
200 words
An apparatus for the construction of circular structures of moldable materials, said apparatus comprising a first mold member having a shape and side substantially similar to one surface of said circular structure to be constructed, a second mold member spaced apart from and outside of said first mold member and substantially parallel to the surface thereof, the four edges of said second mold member intersecting at substantially right angles with one another, said second mold membEr having a horizontal length less than one-fourth the circumference of that portion of said first mold member adjacent said second mold member and having a vertical height less than one-fourth the vertical height of said first mold member as measured along the surface thereof, said second mold member being connected to a carrying means for horizontally moving said second mold member about the entire circumference of said first mold member while maintaining said second mold member at all times throughout said horizontal movement substantially equidistant from the surface of said first mold member, said connection of said second mold member to said carrying means being such as to permit vertical movement of said second mold member along the vertical surface of said carrying means.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 wherein said first mold member comprises a plurality of attachable-detachable segments connected together, said segments being of similar geometric configuration.
Claim 4
Dependent Claim
28 words
The apparatus of claim 1 wherein said carrying means comprises a carrying arm connected to a pivot member which lies along the axis of said first mold member.
Claim 5
Dependent Claim
12 words
The apparatus of claim 1 wherein said first mold member is dome-shaped.
Claim 6
Dependent Claim
12 words
The apparatus of claim 1 wherein said first mold member is cylindrical.
Claim 7
Dependent Claim
64 words
The apparatus of claim 4 wherein said carrying means comprises an arcuate carrying arm external of said first mold member and rotatably connected at its upper end to said pivot member and having means adjacent its lower end for traversing the base of said first mold member, said arcuate carrying arm lying substantially equidistant from said first mold member along substantially its entire length.
Claim 8
Dependent Claim
33 words
The apparatus of claim 6 wherein said carrying arm is in moveable contact with a circular guide means adjacent the base of said first mold member and equidistantly spaced therefrom throughout its circumference.
Claim 9
Dependent Claim
55 words
The apparatus of claim 7 wherein said guide means comprises a raised circle of tubular metal spaced apart from the surface and wherein said means adjacent the lower end of said arcuate carrying arm for traversing the base of said base mold comprises wheels having grooved peripheries for receiving and moving upon such guide means.
Claim 10
Dependent Claim
78 words
The apparatus of claim 7 wherein said guide means comprises a circular rail secured to the surface for construction and said means adjacent the lower end of said carrying arm for traversing the base of said base mold comprises a wheel and contact with said surface and wherein said carrying arm is in contact with said rail by means of a lug extending downward from said carrying arm into slidable contact with the inner surface of said rail.
Claim 11
Dependent Claim
95 words
The apparatus of claim 4 wherein said first mold member is inverted such that its circular base is uppermost and lies in a plane substantially parallel with the surface of the earth and said carrying arm comprising an extendable carrying arm extending from and substantially perpendicular to a pivot member which extends from a supported position above said first base mold along the axis thereof to a point just above the lower most surface of such base mold, said extendable carrying arm is connected to said pivot member for vertical movement along said pivot member.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |