Patent US3663681A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3663681A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for handling cast articles

Assignee: Winbrook China Inc
•
Filing: 1970-01-26
•
Granted: 1972-05-16
•
Expires: 1990-01-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Injection molding method for molding articles, particularly ceramic articles such as square lavatories which have a flat back edge surface. The injection molding takes place at high pressure. Particular means are provided for handling the molds and for removing the top or cover of the carrier, rotating the top or cover and removing the finished cast article such that the finish piece is positioned to rest on its flat surface. The cast article is rotated through 90 degrees, set on a movable surface and then separated from the mold cover by applying pressure which moves the article and the movable surface a small amount. The apparatus facilitates handling of the molds and makes possible rapid and repeated use of the mold and thereby greatly augments their utility.

Inventors

  • 👤 Josef Ehrlich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 02:18
CPC Classifications
B; B28; B28B; B28B7/00; B28B7/10; B28B7/12; B28B1/00; B28B1/26; B28B1/265; Y; Y10; Y10S; Y10S425/00; Y10S425/102

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

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) 1975-05-16 1975-11-15 1976-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-16 1979-11-15 1980-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-16 1983-11-15 1984-05-16 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag