Patent US3801059A successfully refreshed from Google Patents.
US3801059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mould for use in filling of hollow bodies with foam and for the production of hard-foam articles
Assignee: Hennecke GmbH
•
Filing: 1972-06-15
•
Granted: 1974-04-02
•
Expires: 1992-06-15
Abstract
Abstract For filling hollow bodies with foam and for the production of hard-foam articles a mould with removable walls is used, one mould wall being formed by a backing table wherein the removable mould walls are supported on a supporting platform by means of parallel guide elements.
Inventors
- 👤 H Lippold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:48
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/20; B29C33/22; B29C33/202; B29C44/00; B29C44/02; B29C44/12; B29C44/1228; B29C44/1233; B29C2033/207; B29C44/14; B29L; B29L2031/00; B29L2031/762; B29L2031/7622
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A mould for use in filling hollow bodies with foam and for the production of hard-foam articles, the mould comprising removable mould walls, said walls including outer and inner mould walls and a bottom mould panel suspended from vertical guides, said bottom mould panel being adapted to contact said inner mould walls, said mould including one mould wall being formed by a backing table, wherein the removable mould walls are supported on a supporting platform by means of parallel guide elements.
Claim 2
Dependent Claim
81 words
A mould for use in filling hollow bodies with foam and for the production of hard-foam articles, the mould comprising removable mould walls, said walls including outer and inner mould walls and a bottom mould panel suspended from vertical guides, said bottom mould panel being adapted to contact said inner mould walls, said mould including one mould wall being formed by a backing table, wherein the removable mould walls are supported on a supporting platform by means of parallel guide elements.
Claim 3
Dependent Claim
14 words
A mould according to claim 1, wherein the parallel guide elements comprise parallelogram guides.
Claim 4
Dependent Claim
16 words
A mould according to claim 1, wherein the parallel guide elements comprise hydraulic pistons and cylinders.
Claim 5
Dependent Claim
16 words
A mould according to claim 1, wherein the length of the parallel guide element is adjustable.
Claim 6
Dependent Claim
25 words
A mould according to claim 1, wherein locking elements which are adapted to lock together are arranged on the supporting platform and the backing table.
Claim 7
Dependent Claim
12 words
A mould according to claim 5, wherein the mould walls are replaceable.
Claim 8
Dependent Claim
18 words
A mould according to claim 5, wherein the mould walls consist of several individual sections with replaceable elements.
Claim 9
Dependent Claim
15 words
A mould according to claim 1, wherein the mould walls are made up of plywood.
Claim 10
Dependent Claim
39 words
A mould according to claim 1, wherein the inner mould walls are provided along their upper edge with stop elements which are adapted during use of the mould to rest on the upper edge of the outer mould walls.
Claim 11
Dependent Claim
127 words
A mould for use in filling a hollow housing of preformed sheet material with foam, especially a refrigerator housing, and the production of hard-foam housings, said mould comprising removable outer and inner mould walls defining a mould cavity together with a bottom mould panel and a backing table, said bottom mould panel suspended from vertical guides supported by a supporting platform by means of bores, one of the walls of said mould being formed by a backing table arranged facing the supporting platform and adapted to support a moulded article with its rear wall thereon, said bottom mould panel being vertically displaceable in the direction of the packing table and adapted to contact the inner mould walls, said supporting platform and backing table having coacting clamping means.
Claim 12
Dependent Claim
127 words
A mould for use in filling a hollow housing of preformed sheet material with foam, especially a refrigerator housing, and the production of hard-foam housings, said mould comprising removable outer and inner mould walls defining a mould cavity together with a bottom mould panel and a backing table, said bottom mould panel suspended from vertical guides supported by a supporting platform by means of bores, one of the walls of said mould being formed by a backing table arranged facing the supporting platform and adapted to support a moulded article with its rear wall thereon, said bottom mould panel being vertically displaceable in the direction of the packing table and adapted to contact the inner mould walls, said supporting platform and backing table having coacting clamping means.
Claim 13
Dependent Claim
40 words
A mould according to claim 10 wherein the inner mould walls are provided along their upper edge with stop elements which are adapted during the use of the mould to rest on the upper edge of the outer mould walls.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |