Patent US3781159A successfully refreshed from Google Patents.
US3781159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counterbalanced mount for separable mold
Assignee: Mannesmann Demag Krauss Maffei GmbH
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Filing: 1971-12-08
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Granted: 1973-12-25
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Expires: 1991-12-08
Abstract
Abstract A mount for a separable mold has a pair of elements each carrying one mold member and displaceable towards and away from each other. A lever arrangement including at least one rigid link is provided between the two elements so that on displacement of one of the elements in one direction the other is displaced in the opposite direction. With one element arranged above the other its weight plus that of its mold member counterbalances that of the other element and its mold member so that the only force that need be exerted to open the mold is that necessary to overcome friction and inertia. The lever linkage can be a pair of lever arms arranged as a scissor whose central pivot point is also a pivot for the whole mold to allow positioning thereof. Alternatively the elements can be pivoted with one acting as a first-order lever and the other as a third-order lever and with the various lever arms so dimensioned that the mold opens automatically when filled and closes automatically when emptied.
Inventors
- 👤 R Lidl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:17
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/42; B29C44/428; B29C45/00; B29C45/17; B29C45/64; B29C45/68; B29C33/00; B29C33/20; B29C33/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
237 words
A mounting assembly for a separable mold, said assembly comprising: a first element carrying one mold member and displaceable in a first direction for closing of said mold and in a second direction opposed to said first direction for opening of said mold; a second element carrying another mold member and displaceable at least generally in said second direction toward said first element for closing of said mold and at least generally in said first direction away from said first element for opening of said mold; link means including a first rigid link having ends opeRatively connected to said elements with said ends defining a line extending in the closed position of said mold at an angle to said directions for displacement of one of said elements in said first direction on displacement of said other element in said second direction and for displacement of said one of said elements in said second direction on displacement of said other element in said first direction and a second such link crossing said first link and pivoted thereto at the crossover location; a support having a pivot, both of said links and said elements being pivotal on said support, said pivot on said support being coaxial with the pivot at the crossover location of said links; and guide means pivotal about said pivot and arrestable relative to said support for maintaining said links parallel to a predetermined angular position.
Claim 2
Dependent Claim
237 words
A mounting assembly for a separable mold, said assembly comprising: a first element carrying one mold member and displaceable in a first direction for closing of said mold and in a second direction opposed to said first direction for opening of said mold; a second element carrying another mold member and displaceable at least generally in said second direction toward said first element for closing of said mold and at least generally in said first direction away from said first element for opening of said mold; link means including a first rigid link having ends opeRatively connected to said elements with said ends defining a line extending in the closed position of said mold at an angle to said directions for displacement of one of said elements in said first direction on displacement of said other element in said second direction and for displacement of said one of said elements in said second direction on displacement of said other element in said first direction and a second such link crossing said first link and pivoted thereto at the crossover location; a support having a pivot, both of said links and said elements being pivotal on said support, said pivot on said support being coaxial with the pivot at the crossover location of said links; and guide means pivotal about said pivot and arrestable relative to said support for maintaining said links parallel to a predetermined angular position.
Claim 3
Dependent Claim
35 words
The mounting assembly defined in claim 1, further comprising means for displacing at least one of the ends of at least one of said links relative to the respective element and transverse to said directions.
Claim 4
Dependent Claim
35 words
The mounting assembly defined in claim 1 wherein one of said elements is situated generally above the other of said elements, the center of mass of said mold lying on the axis of said pivot.
Claim 5
Dependent Claim
23 words
The mounting assembly defined in claim 1, further comprising guide means for maintenance of said elements parallel to each other at all times.
Claim 6
Dependent Claim
34 words
The mounting assembly defined in claim 1, further comprising means operatively connected to one of said members for displacing same relative to said support and thereby displacing the other member in the opposite direction.
Claim 7
Dependent Claim
33 words
The mounting assembly defined in claim 1 wherein said links are provided at their ends with second pivots operatively connecting same to said elements, said second pivots being equidistant from the first-mentioned pivot.
Claim 8
Dependent Claim
74 words
The mounting assembly defined in claim 1, further comprising a second such first link and a second such second link on the other side of said elements and both pivoted on said support at a second such pivot coaxial to the first-mentioned pivot and four connecting members substantially parallel to said pivot and each connected between an end of one of the first-mentioned links and the corresponding end of one of the second-mentioned links.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |