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
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.
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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) | 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 |