← Back to Patent Explorer
US3220819A Expired / Lapsed US ⏱️ 0.0 years remaining

Hold down device for glass bending mold

Assignee: Shatterproof Glass Corp
•
Filing: 1964-05-20
•
Granted: 1965-11-30
•
Expires: 1984-05-20
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Joseph E Jendrisak

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 06:12
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/025; C03B23/027

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 181 words
IN A COLLAPSIBLE BENDING MOLD FOR FORMING HEATSOFTENED GLASS SHEETS, AN END SECTION MOUNTED TO SWING VERTICALLY ABOUT A HORIXONTAL AXIS AND HAVING AN OUTER END PROVIDED WITH A FACE THAT ENGAGES THE UNDER SIDE OF A GLASS SHEET TO BE BENT AND THAT SWINGS UPWARDLY FROM A GLASS RECEIVING POSITION TO A MOLDING POSITION, A GLASS RETAINING MEMBER LOCATED ON THE OUTER END OF SAID END SECTION AND MOVABLE BETWEEN A GLASS ENGAGING POSITION AND A SECOND POSITION SPACED FROM THE GLASS, LINK MEANS MOVABLY MOUNTING SAID MEMBER TO SID END SECTION, A LEVER PRIVOTALLY MOUNTED ON SAID END SECTION TO SWING VERTICALLY ABOUT A TRANSVERSE AXIS INTERMEDIATE ITS ENDS, A COUNTERWEIGHT CONNECTED TO SAID LEVER BELW ITS AXIS, MEANS CONNECTING THE UPPER END OF SAID LEVER TO SAID GLASS RETAINING MEMBER WHEREBY THE UPPER END OF SAID LEVER APPLIES A THRUST HOLDING SAID MEMBER IN ITS SECOND POSITION WHILE SAID END SECTION IS IN ITS GLASS RECEIVING POSITION AND A REVERSE THRUST MOVING SAID MEMBER TO ITS GLASS RETAINING POSITION AS SAID END SECTION APPROACHES ITS UPWARD MOLDING POSITION.
Claim 2
Dependent Claim 181 words
IN A COLLAPSIBLE BENDING MOLD FOR FORMING HEATSOFTENED GLASS SHEETS, AN END SECTION MOUNTED TO SWING VERTICALLY ABOUT A HORIXONTAL AXIS AND HAVING AN OUTER END PROVIDED WITH A FACE THAT ENGAGES THE UNDER SIDE OF A GLASS SHEET TO BE BENT AND THAT SWINGS UPWARDLY FROM A GLASS RECEIVING POSITION TO A MOLDING POSITION, A GLASS RETAINING MEMBER LOCATED ON THE OUTER END OF SAID END SECTION AND MOVABLE BETWEEN A GLASS ENGAGING POSITION AND A SECOND POSITION SPACED FROM THE GLASS, LINK MEANS MOVABLY MOUNTING SAID MEMBER TO SID END SECTION, A LEVER PRIVOTALLY MOUNTED ON SAID END SECTION TO SWING VERTICALLY ABOUT A TRANSVERSE AXIS INTERMEDIATE ITS ENDS, A COUNTERWEIGHT CONNECTED TO SAID LEVER BELW ITS AXIS, MEANS CONNECTING THE UPPER END OF SAID LEVER TO SAID GLASS RETAINING MEMBER WHEREBY THE UPPER END OF SAID LEVER APPLIES A THRUST HOLDING SAID MEMBER IN ITS SECOND POSITION WHILE SAID END SECTION IS IN ITS GLASS RECEIVING POSITION AND A REVERSE THRUST MOVING SAID MEMBER TO ITS GLASS RETAINING POSITION AS SAID END SECTION APPROACHES ITS UPWARD MOLDING POSITION.

References Cited (Backward Citations)

US3103430A Cited
US3003286A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-11-29 1969-05-31 1969-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-11-29 1973-05-31 1973-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-11-29 1977-05-31 1977-11-30 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag