US3782678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making pairs of profiled interfitting frames of plastic
Assignee: Individual
•
Filing: 1971-04-29
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Granted: 1974-01-01
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Expires: 1991-04-29
Abstract
Abstract Profiled interfitting pairs of frames of plastic material, such as sash frames and window wings, door frames and doors, or the like, which are provided with interengaging sealing surfaces separating the pair of frames from each other, are cast in a single working step in a common mold which is subdivided into two mold cavities for the pair of frames by mounting a separating member within the mold having complementarily shaped side surfaces defining snugly interengaging sealing surfaces of the completed pair of frames.
Inventors
- 👤 H Thams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:19
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/04; E06B3/06; E06B3/08; E06B3/20; B; B29; B29C; B29C33/00; B29C33/30; B29C33/301; B29C39/00; B29D; B29D12/00; B29L; B29L2031/00; B29L2031/001; B29L2031/003; B29L2031/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
Mold means for casting a so-called plastics profiled frame consisting of a pair of interfitting frame elements in the form of a wing and a sash frame, these two elements engaging each other by profiled surfaces in a sealing manner, comprising a common mold for said pair of elements including a separating member having complementarily profiled side surfaces, one side surface defining a mold cavity wall for said sash frame while the other side surface defines a mold cavity wall for said window wing, the separating member thus dividing the mold into two mold cavities, first mold section means together with the separating member forming a unit which is placeable into a second mold section, and wherein the mold cavity for the sash frame is disposed within said unit, while the mold cavity for the window wing is arranged between the separating member and the second mold section, both mold cavities being filled with plastic material in a single continuous operation, thereby forming snugly interengaging sealing surfaces between said pair of frame elements.
Claim 2
Dependent Claim
173 words
Mold means for casting a so-called plastics profiled frame consisting of a pair of interfitting frame elements in the form of a wing and a sash frame, these two elements engaging each other by profiled surfaces in a sealing manner, comprising a common mold for said pair of elements including a separating member having complementarily profiled side surfaces, one side surface defining a mold cavity wall for said sash frame while the other side surface defines a mold cavity wall for said window wing, the separating member thus dividing the mold into two mold cavities, first mold section means together with the separating member forming a unit which is placeable into a second mold section, and wherein the mold cavity for the sash frame is disposed within said unit, while the mold cavity for the window wing is arranged between the separating member and the second mold section, both mold cavities being filled with plastic material in a single continuous operation, thereby forming snugly interengaging sealing surfaces between said pair of frame elements.
Claim 3
Dependent Claim
44 words
A mold according to claim 1, characterized in that the side surfaces of said separating member exposed within said common mold include an angle with the horizontal plane of said mold thereby forming a tapered sealing and separating surface between said pair of frames.
Claim 4
Dependent Claim
79 words
A mold according to claim 1 wherein the mold cavity for said sash frame is arranged laterally and slightly above the mold cavity for said window wing, and the upper edge of said separating member is forming a weir determining the extent of filling the mold cavity for said sash frame with plastic material and allowing the latter to overflow into the lower cavity for said window wing after the filling of the upper mold cavity has been completed.
References Cited (Backward Citations)
US1285816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |