← Back to Patent Explorer
US3171930A Expired / Lapsed US ⏱️ 0.0 years remaining

Precalibrated thermostatic latch assembly

Assignee: General Electric Co
•
Filing: 1963-01-02
•
Granted: 1965-03-02
•
Expires: 1983-01-02
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Keith W Klein
  • 👤 David B Powell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 20:23
CPC Classifications
H; H01; H01H; H01H71/00; H01H71/10; H01H71/12; H01H71/40

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 266 words
A PRECALIBRATED THERMAL LATCH ASSEMBLY COMPRISING: (A) A SUPPORT, (B) A TRIPPING MEMBER PIVOTALLY MOUTNED ON SAID SUPPORT, (C) SAID TRIPPING MEMBER HAVING A LATCH SHOULDER PORTION, (D) SAID TRIPPING MEMBER HAVING AN ABUTMENT PORTION SPACED FROM SAID LATCH SHOULDER PORTION IN FIXED PREDETERMINED SPACED RELATION, (E) BIASING MEANS CARRIED BY SAID SUPPORT BIASING SAID TRIPPING MEMBER FOR ROTATION IN A PREDETERMINED DIRECTION, (F) A THERMALLY DEFORMABLE LATCHING MEMBER SUPPORTED ON SAID SUPPORT, SAID THERMALLY DEFORMABLE MEMBER HAVING A LATCH DETENT PORTION IN ENGAGEMENT WITH SAID LATCH SHOULDER AND PREVENTING ROTATION OF SAID TRIPPING MEMBER IN SAID PREDETERMINED DIRECTION, (G) SAID THERMALLY DEFORMABLE LATCHING MEMBER HAVING A POSITIONING PORTION ADJACENT SAID ABUTMENT PORTION OF SAID TRIPPING MEMBER, (H) SAID POSITIONING PORTION OF SAID THERMALLY DEFORMABLE MEMBER BEING SPACED FROM SAID DETENT PORTION A PREDETERMINED DISTANCE AT A CORRESPONDING PREDETERMINED TEMPERATURE OF SAID MEMBER, AND (I) BIASING MEANS ACTING ON SAID POSITIONING PORTION OF SAID THERMALLY DEFORMABLE MEMBER AND BIASING SAID MEMBER IN A DIRECTION TO MOVE SAID DETENT PORTION INTO LATCHING ENGAGEMENT WITH SAID LATCH SHOULDER PORTION OF SAID TRIPPING MEMBER, (J) SAID THERMALLY DEFORMABLE MEMBER HAVING A HIGH EXPANSION SIDE AND A LOW EXPANSION SIDE, SAID SIDE BEING ARRANGED SO THAT UPON AN INCREASE IN TEMPERATURE SAID MEMBER DEFORMS AND MOVES SAID POSITIONING PORTION AWAY FROM SAID DETENT PORTION IN THE SAME DIRECTION AS SAID BIASING MEANS TENDS TO MOVE SAID POSITIONING PORTION, WHEREBY FOLLOWING ENGAGEMENT OF SAID POSITIONING PORTION WITH SAID ABUTMENT, SAID THERMALLY DEFORMABLE MEMBER WARPS TO MOVE SAID DETENT PORTION AWAY FROM SAID LATCH SHOULDER PORTION WITHOUT OPPOSITION BY SAID BIASING MEANS.
Claim 2
Dependent Claim 266 words
A PRECALIBRATED THERMAL LATCH ASSEMBLY COMPRISING: (A) A SUPPORT, (B) A TRIPPING MEMBER PIVOTALLY MOUTNED ON SAID SUPPORT, (C) SAID TRIPPING MEMBER HAVING A LATCH SHOULDER PORTION, (D) SAID TRIPPING MEMBER HAVING AN ABUTMENT PORTION SPACED FROM SAID LATCH SHOULDER PORTION IN FIXED PREDETERMINED SPACED RELATION, (E) BIASING MEANS CARRIED BY SAID SUPPORT BIASING SAID TRIPPING MEMBER FOR ROTATION IN A PREDETERMINED DIRECTION, (F) A THERMALLY DEFORMABLE LATCHING MEMBER SUPPORTED ON SAID SUPPORT, SAID THERMALLY DEFORMABLE MEMBER HAVING A LATCH DETENT PORTION IN ENGAGEMENT WITH SAID LATCH SHOULDER AND PREVENTING ROTATION OF SAID TRIPPING MEMBER IN SAID PREDETERMINED DIRECTION, (G) SAID THERMALLY DEFORMABLE LATCHING MEMBER HAVING A POSITIONING PORTION ADJACENT SAID ABUTMENT PORTION OF SAID TRIPPING MEMBER, (H) SAID POSITIONING PORTION OF SAID THERMALLY DEFORMABLE MEMBER BEING SPACED FROM SAID DETENT PORTION A PREDETERMINED DISTANCE AT A CORRESPONDING PREDETERMINED TEMPERATURE OF SAID MEMBER, AND (I) BIASING MEANS ACTING ON SAID POSITIONING PORTION OF SAID THERMALLY DEFORMABLE MEMBER AND BIASING SAID MEMBER IN A DIRECTION TO MOVE SAID DETENT PORTION INTO LATCHING ENGAGEMENT WITH SAID LATCH SHOULDER PORTION OF SAID TRIPPING MEMBER, (J) SAID THERMALLY DEFORMABLE MEMBER HAVING A HIGH EXPANSION SIDE AND A LOW EXPANSION SIDE, SAID SIDE BEING ARRANGED SO THAT UPON AN INCREASE IN TEMPERATURE SAID MEMBER DEFORMS AND MOVES SAID POSITIONING PORTION AWAY FROM SAID DETENT PORTION IN THE SAME DIRECTION AS SAID BIASING MEANS TENDS TO MOVE SAID POSITIONING PORTION, WHEREBY FOLLOWING ENGAGEMENT OF SAID POSITIONING PORTION WITH SAID ABUTMENT, SAID THERMALLY DEFORMABLE MEMBER WARPS TO MOVE SAID DETENT PORTION AWAY FROM SAID LATCH SHOULDER PORTION WITHOUT OPPOSITION BY SAID BIASING MEANS.

References Cited (Backward Citations)

US2692929A Cited
US2786917A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1968-03-01 1968-08-31 1969-03-02 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1972-03-01 1972-08-31 1973-03-02 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1976-03-01 1976-08-31 1977-03-02 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag