US3856444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short-cycle molding device
Assignee: Individual
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Filing: 1972-10-05
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Granted: 1974-12-24
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Expires: 1992-10-05
Abstract
Abstract A short-cycle molding device for a quick-setting fluid substance such as polyurethane, which includes a carrousel rotating with uniform motion and a frame oscillating around the carrousel pivot and on which at least one pouring head is mounted. The pouring head is mounted in such a manner that it accompanies the carrousel on a path limited during the pour and then returns to its starting point. The carrousel during its forward movement drives the moving frame by catch means which is connected to the moving frame and to the carrousel, and means are provided to allow the moving frame to be pushed back to its starting point.
Inventors
- 👤 J Saltel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:48
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; B29C45/07; B29C45/08; B29C39/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
238 words
Apparatus for rapid cyclic molding of a quick setting fluid material such as polyurethane, said apparatus comprising a carrousel mounted for rotation about a vertical axis, means for continuously rotating said carrousel about said vertical axis, said carrousel including a circular table and a series of molds on said table at the periphery thereof, covers for said molds, radial arms pivotably supported on said carrousel and carrying said covers, means for pivoting said arms to move said covers and open said molds during a material pouring operation and close said molds during setting of the material, and a pair of abutments corresponding to each mold and fixed at the periphery of said table; a movable assembly mounted for pivotable movement around said vertical axis below said table and including at least one pouring head extending at a level above said molds for introducing said material into the molds entrainment means for driving said movable assembly by said carrousel over a limited path of annular travel, and means for reciprocally moving the pouring head above a corresponding mold during the pouring operation, said entrainment means comprising a radial finger supported from said movable assembly for radial movement between extended and retracted positions, said finger in the extended position engaging one of said abutments to drive said movable assembly and in the retracted position being free from said abutments to permit the movable assembly to return to an initial position.
Claim 2
Dependent Claim
238 words
Apparatus for rapid cyclic molding of a quick setting fluid material such as polyurethane, said apparatus comprising a carrousel mounted for rotation about a vertical axis, means for continuously rotating said carrousel about said vertical axis, said carrousel including a circular table and a series of molds on said table at the periphery thereof, covers for said molds, radial arms pivotably supported on said carrousel and carrying said covers, means for pivoting said arms to move said covers and open said molds during a material pouring operation and close said molds during setting of the material, and a pair of abutments corresponding to each mold and fixed at the periphery of said table; a movable assembly mounted for pivotable movement around said vertical axis below said table and including at least one pouring head extending at a level above said molds for introducing said material into the molds entrainment means for driving said movable assembly by said carrousel over a limited path of annular travel, and means for reciprocally moving the pouring head above a corresponding mold during the pouring operation, said entrainment means comprising a radial finger supported from said movable assembly for radial movement between extended and retracted positions, said finger in the extended position engaging one of said abutments to drive said movable assembly and in the retracted position being free from said abutments to permit the movable assembly to return to an initial position.
Claim 3
Dependent Claim
20 words
Apparatus as claimed in claim 1 wherein said pouring head includes two sections and Each mold includes two corresponding sections.
Claim 4
Dependent Claim
34 words
Apparatus as claimed in claim 1 comprising end of travel switch means for operating said pivoting means for said arms, and actuator means for said end of travel switch means carried by said table.
Claim 5
Dependent Claim
83 words
Apparatus as claimed in claim 1 comprising a timing mechanism for controlling the pouring head and means for actuating the timing mechanism comprising a circular plate fixedly mounted around said vertical axis, a pair of switches secured to said plate and connected to the timing mechanism, and means for actuating said switches comprising a jack fixed to said table, and an abutment secured to said jack, and electrical distribution means disposed in the carrousel for supply of electrical energy to electrically operative elements.
Claim 6
Dependent Claim
103 words
Apparatus as claimed in claim 1 comprising a stationary base supporting said carrousel, a rail section fixed on said base, said movable assembly being rollably supported on said rail and pivotable about said axis, jack means coupled to said movable assembly to return the same to said initial position after completion of the pouring operation, end of travel switch means fixed to said base, and adjustable actuator means secured to said movable assembly for activating said end of travel switch means, the latter being connected for controlling the radial movement of said radial finger and the means which reciprocally moves the pouring head.
Claim 7
Dependent Claim
40 words
Apparatus as claimed in claim 1 wherein said means for reciprocally moving said pouring head comprises a carriage radially displaceable on said movable assembly, said pouring head being secured on said carriage. and jack means for radially displacing said carriage.
Claim 8
Dependent Claim
100 words
Apparatus as claimed in claim 1 wherein said pouring head comprises a body, a pivotal shaft in said body, a roller mechanism on said shaft at one end thereof, and a turbine on said shaft at the lower end thereof, said body having a mixing chamber in which said turbine is rotatable and an outlet orifice opening into said mixing chamber, first conduit means for inflow of materials to be poured, second conduit means for return flow of said material, and valve means for selectively connecting said first conduit means to said mixing chamber or to said second conduit means.
Claim 9
Dependent Claim
132 words
Apparatus as claimed in claim 1 wherein said entrainment means further comprises a base member supporting said finger for radial displacement, a base portion fixed to said base member and provided with a recess, a cross-member including a pin engaged in said recess, a jack supported on said cross-member and operatively coupled to said finger, a cover having a recess, a further pin on said cross member engaged in the recess in said cover, side plates securing said base member and cover together and also supporting said finger, a shaft carrying said finger, a body slidably supporting said shaft, and means supporting said finger, body and jack as a pivotal assembly around said pins for limited angular adjustment and a travel limit switch means for engaging said assembly to limit travel thereof.
Claim 10
Dependent Claim
84 words
Apparatus as claimed in claim 8 wherein said travel limit switch means comprises a fixed abutment and a yieldable switch assembly, and means for actuating said switches comprising a jack fixed to said table, and an abutment secured to said jack, and electrical distribution means disposed in the carrousel for supply of electrical energy to electrically operative elements, said yieldable switch assembly being connected to said jack which is fixed to said table and carries said abutment to control the operation of said jack.
Claim 11
Dependent Claim
24 words
Apparatus as claimed in claim 8 wherein said finger has a shape to provide good engagement with said one abutment in said extended position.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |