Patent US3880557A successfully refreshed from Google Patents.
US3880557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus for splicing electrical cable
Assignee: Reliance Electric Co
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Filing: 1973-02-20
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Granted: 1975-04-29
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Expires: 1993-02-20
Abstract
Abstract A molding apparatus having upper and lower platens to which are attached upper and lower mold forms. The apparatus includes two guide pins and a threaded rod for moving the upper platen vertically without disturbing the alignment between the platens and thereby the mold forms. The upper platen is articulated to facilitate placing a cable within and removing the cable from a mold cavity. Threaded fasteners are provided for distributing the clamping force on the upper platen necessary to provide a tight engagement of the mold forms. An injection apparatus communicates with the mold cavity for injecting additional molding material and for increasing pressure within the mold cavity. Bleed or vent openings in the upper platen and mold form are provided for allowing entrapped air to escape. Such a molding apparatus enables highly reliable splices of righ voltage cable to be accomplished easily and simply.
Inventors
- 👤 Arthur L Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:53
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/14; H02G1/145; B; B29; B29C; B29C45/00; B29C45/14; B29C45/14549; B29C45/17; B29C45/46; H01; H01B; H01B13/00; H01B13/06; H01B13/10; H01B13/103; B29C2045/14557; Y; Y10; Y10S; Y10S425/00; Y10S425/802; Y10S425/812
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
326 words
A molding apparatus comprising: first and second mold forms moveable between open and closed positions and forming a mold cavity; means engaging said first and second mold forms by retaining said mold forms in said closed position; means in thermal communication with said mold forms for supplying heat to said mold cavity; means formed in said mold forms for communicating said mold cavity and the environment; means connected to said mold forms for supplying material to be molded and for increasing pressure within said mold cavity, including a housing having an interior space and first and second open end, said interior space communicating with a mold cavity through said first open end and means moveable within said housing interior space for causing material to be moved from said housing interior space to said mold cavity and for allowing gas within said interior space to vent to the environment; said retaining means including first and second platens; a guide pin for aligning said first and second mold forms in said closed position; a threaded rod attached to said second platen and engaging said first platen through a threaded opening for bringing said mold forms into tight engagement; and a threaded fastener mounted to said second platen and engaged by said first platen along a portion spaced form the portion engaged by said threaded rod; and including: a hinge dividing portions of said first platen, a first portion being moveable between open and closed positions corresponding to the open and closed positions of said mold forms; openings in each of said first and second platens for corresponding to openings in said first and second mold forms whereby fasteners are received to attach said platens and said mold forms; additional openings in said first platen and additional aligned openings in said first mold form for allowing gas in said mold cavity to escape; means connected to said first platen for selectively blocking said additional openings of said first platen.
Claim 2
Dependent Claim
326 words
A molding apparatus comprising: first and second mold forms moveable between open and closed positions and forming a mold cavity; means engaging said first and second mold forms by retaining said mold forms in said closed position; means in thermal communication with said mold forms for supplying heat to said mold cavity; means formed in said mold forms for communicating said mold cavity and the environment; means connected to said mold forms for supplying material to be molded and for increasing pressure within said mold cavity, including a housing having an interior space and first and second open end, said interior space communicating with a mold cavity through said first open end and means moveable within said housing interior space for causing material to be moved from said housing interior space to said mold cavity and for allowing gas within said interior space to vent to the environment; said retaining means including first and second platens; a guide pin for aligning said first and second mold forms in said closed position; a threaded rod attached to said second platen and engaging said first platen through a threaded opening for bringing said mold forms into tight engagement; and a threaded fastener mounted to said second platen and engaged by said first platen along a portion spaced form the portion engaged by said threaded rod; and including: a hinge dividing portions of said first platen, a first portion being moveable between open and closed positions corresponding to the open and closed positions of said mold forms; openings in each of said first and second platens for corresponding to openings in said first and second mold forms whereby fasteners are received to attach said platens and said mold forms; additional openings in said first platen and additional aligned openings in said first mold form for allowing gas in said mold cavity to escape; means connected to said first platen for selectively blocking said additional openings of said first platen.
Claim 3
Dependent Claim
252 words
A molding apparatus comprising: first and second mold forms moveable between open and closed positions and forming a mold cavity; means engaging the first and second mold forms for retaining the forms in their closed positions, the retaining means including first and second platens, a guide pin for aligning the first and second mold forms in the closed position, a threaded rod attached to the second platen and engaging the first platen through a threaded opening for bringing the mold forms into tight engagement, a threaded fastener mounted to the second platen and engaged by the first platen along a portion spaced from the engaged by the threaded rod; a hinge dividing portions of the first platen, a first portion being moveable between open and closed positions corresponding to the open and closed positions of the mold forms; each of the platens and of the mold forms including corresponding, aligned openings; fasteners received in said openings and attaching the platens to the respective mold forms; means in thermal communication with the mold forms for supplying heat to the mold cavity; means for supplying material to be molded to the mold cavity and for increasing the pressure within the cavity; at least one of the forms and of the correspondidng platen including a plurality of aligned openings communicating the mold cavity with the atmosphere for allowing gas and pressurized material supplied to the cavity to escape thereform to the atmosphere; and means connected to the last mentioned platen for selectively blocking the apertures.
Claim 4
Dependent Claim
252 words
A molding apparatus comprising: first and second mold forms moveable between open and closed positions and forming a mold cavity; means engaging the first and second mold forms for retaining the forms in their closed positions, the retaining means including first and second platens, a guide pin for aligning the first and second mold forms in the closed position, a threaded rod attached to the second platen and engaging the first platen through a threaded opening for bringing the mold forms into tight engagement, a threaded fastener mounted to the second platen and engaged by the first platen along a portion spaced from the engaged by the threaded rod; a hinge dividing portions of the first platen, a first portion being moveable between open and closed positions corresponding to the open and closed positions of the mold forms; each of the platens and of the mold forms including corresponding, aligned openings; fasteners received in said openings and attaching the platens to the respective mold forms; means in thermal communication with the mold forms for supplying heat to the mold cavity; means for supplying material to be molded to the mold cavity and for increasing the pressure within the cavity; at least one of the forms and of the correspondidng platen including a plurality of aligned openings communicating the mold cavity with the atmosphere for allowing gas and pressurized material supplied to the cavity to escape thereform to the atmosphere; and means connected to the last mentioned platen for selectively blocking the apertures.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |