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US4432289A Expired / Lapsed US ⏱️ 0.0 years remaining

Furnace brick tie back assembly

Assignee: Individual
•
Filing: 1981-07-23
•
Granted: 1984-02-21
•
Expires: 2001-07-23
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Abstract

Abstract A tie back assembly for holding in place loose bricks forming an interior furnace wall is disclosed comprising a hold back plate, an adjustable stud holder assembly attachable at one end to the plate and extending through the furnace wall, and a locking means positioned outside the furnace for securely fixing the plate against the loose bricks.

Inventors

  • 👤 Deumite Norman
  • 👤 James P. Brannagan
  • 👤 Wesley McLane

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 20:29
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1621; F16; F16L; F16L59/00; F16L59/12

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 205 words
A tie back assembly for holding in place a loosened brick which form part of an interior furnace wall which comprises: (a) a hold back plate; (b) a holder assembly comprising: (i) a stud shaft attachable at one end to said plate; said shaft has a series of shaft openings positioned along its horizontal axis at its end opposite said end, attachable to said plate; (ii) a hollow sleeve member through which said shaft can pass, said sleeve fitting through an opening in said wall and extendable past the exterior of said furnace wall; said sleeve member has a series of sleeve openings positioned along its horizontal axis; (iii) means for fixing the position of said shaft in said sleeve member; said means is a pin that is of length and diameter to allow said pin to pass through both aligned said shaft opening and said sleeve openings; and (c) a locking means positioned outside the furnace, but operationally connectable to said shaft for fixing said plate against said loosened brick; said locking means comprises a coil spring fitting over said sleeve member and in contact at one end with the exterior furnace wall surface and in contact at its other end with said pin.
Claim 2
Dependent Claim 205 words
A tie back assembly for holding in place a loosened brick which form part of an interior furnace wall which comprises: (a) a hold back plate; (b) a holder assembly comprising: (i) a stud shaft attachable at one end to said plate; said shaft has a series of shaft openings positioned along its horizontal axis at its end opposite said end, attachable to said plate; (ii) a hollow sleeve member through which said shaft can pass, said sleeve fitting through an opening in said wall and extendable past the exterior of said furnace wall; said sleeve member has a series of sleeve openings positioned along its horizontal axis; (iii) means for fixing the position of said shaft in said sleeve member; said means is a pin that is of length and diameter to allow said pin to pass through both aligned said shaft opening and said sleeve openings; and (c) a locking means positioned outside the furnace, but operationally connectable to said shaft for fixing said plate against said loosened brick; said locking means comprises a coil spring fitting over said sleeve member and in contact at one end with the exterior furnace wall surface and in contact at its other end with said pin.
Claim 3
Dependent Claim 68 words
A tie back assembly according to claim 1 wherein: (a) said plate has overlapping openings of different diameters extending through said plate; and (b) said shaft end has an exterior diameter to allow it to pass through only one of said openings, said shaft end having a circumferenial groove of sufficient depth to form the groove section diameter to allow the groove section to pass through said openings.
Claim 4
Dependent Claim 19 words
A tie back assembly according to claim 1 wherein said plate and said shaft are constructed from ceramic material.

References Cited (Backward Citations)

US15832A Cited
US1738527A Cited
US2598474A Cited
GB796302A Cited
US3523395A Cited
US3676973A Cited
GB1359291A Cited
US3742670A Cited
US4018023A Cited
US4030261A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-02-20 1987-08-22 1988-02-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-02-20 1991-08-22 1992-02-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-02-20 1995-08-22 1996-02-21 $7700.00 Window Closed / Lapsed

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