US4046272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for upending a ceramic mold
Assignee: Individual
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Filing: 1976-09-15
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Granted: 1977-09-06
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Expires: 1996-09-15
Abstract
Abstract Mold dumping apparatus. Means are provided for dumping excess slip from a mold after desired wall thickness of greenware is obtained. Clamp structure is arranged on a first pair of uprights which latter are both vertically and pivotally movable on a pivot axis with respect to a second pair of uprights. Said second pair of uprights are supported rigidly on a base. The mold is received within said clamp structure and the mechanism operated to lift the first pair of uprights upwardly with respect to the second pair thereof. As same reaches a substantially predeterminable point near but above the point of the above-mentioned pivot axis, same becomes overbalanced and will automatically tip and dump the excess slip out from the mold. Any suitable receptacle may be provided for receiving said slip as it flows out of the mold.
Inventors
- 👤 Donald J. Hayward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:13
CPC Classifications
B; B28; B28B; B28B1/00; B28B1/26; B28B7/00; B28B7/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
In a device for dumping a liquid from a mold, such as for dumping slip from a mold, the combination comprising: support structure comprising a base and a pair of upstanding support posts positioned rigidly thereon; lift structure comprising a pair of parallel arranged lifting posts connected in vertically movable, and pivotal, relationship with said support posts and including clamp means for holding a mold on and between said lifting posts; operator controllable means for lifting said lifting posts with respect to said support posts, and pivot means fixedly mounted on said support posts constantly maintaining said pivotal relationship between said lifting posts and support posts; whereby so long as the center of gravity of said support posts and the means associated therewith is below the pivotal axis of said pivot means a mold held within said clamp means will remain in liquid holding position but upon lifting of said support structure above said axis such mold will be automatically dumped.
Claim 2
Dependent Claim
161 words
In a device for dumping a liquid from a mold, such as for dumping slip from a mold, the combination comprising: support structure comprising a base and a pair of upstanding support posts positioned rigidly thereon; lift structure comprising a pair of parallel arranged lifting posts connected in vertically movable, and pivotal, relationship with said support posts and including clamp means for holding a mold on and between said lifting posts; operator controllable means for lifting said lifting posts with respect to said support posts, and pivot means fixedly mounted on said support posts constantly maintaining said pivotal relationship between said lifting posts and support posts; whereby so long as the center of gravity of said support posts and the means associated therewith is below the pivotal axis of said pivot means a mold held within said clamp means will remain in liquid holding position but upon lifting of said support structure above said axis such mold will be automatically dumped.
Claim 3
Dependent Claim
36 words
The device of claim 1 wherein at least one of said support posts is movable on said base toward and away from the other of said support posts for adjusting the spacing between said lifting posts.
Claim 4
Dependent Claim
39 words
The device of claim 1 wherein at least one portion of the clamp means arranged on said lifting posts is vertically movable with respect to other portions of said clamping means for adjusting same to molds of varying sizes.
Claim 5
Dependent Claim
49 words
The device of claim 1 wherein the clamp means comprise upper and lower clamp plates and including also resilient elongated means extending between said clamp plates for holding a mold in position between said clamp plates in all vertical and tilted positions occupied by same during said dumping procedure.
Claim 6
Dependent Claim
80 words
The device of claim 1 wherein the sole connection between said lifting posts and their respectively associated support posts each comprises coaxially positioned shafts which are associated with lifting means between said support posts and said lifting posts but which permit tilting of said lifting structure with respect to said support structure at any relative vertical position therebetween whereas the center of gravity of the lifting structure and any load carried thereby rises above the common axis of said shafts.
Claim 7
Dependent Claim
144 words
The device of claim 5 including also a block rigidly fixed into each of said support posts for the rotative reception and bearing support of said respective shafts and a guide block slidably provided in each of said lifting posts for the reception and guidance of the other ends of each of said respective shafts; a rack arranged along each of said lifting posts and fixed rigidly thereto and a pinion on each of said shafts engageable with each of said racks; whereby rotation of said shafts will act through said pinions and racks to effect vertical movement of said lifting structure with respect to said support structure and permit tilting movement of said lifting structure with respect to said support structure when the center of gravity of the lifting structure and load means carried thereby rises above the common axis of said shafts.
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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |