Protective refractory locking mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 7, 1994
Grant Date -
N/A
app pub date -
Nov 13, 1992
filing date -
Nov 13, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for locking refractory insulation members on support elements in a heat treating furnace, boiler or other piping has a first strap end with a ramp and a second strap end with a raised bearing tab. The ramp engages the bearing tab with an interference-fit to capture the first strap end on the second strap end. The first embodiment of the invention includes a hook insertable in a window. The hook has a deflectable ramp with a bearing edge which engages a lock surface on the raised bearing tab to lock opposing strap ends to one another. The second embodiment of the invention includes an angled edge on the first strap end which engages the raised bearing tab on the second strap end. The first and second strap ends have opposing slots. The first strap end includes a notched back which, when the opposing slots are fully interengaged, receives the bearing tab to capture the first strap end on the second strap end. In both embodiments, the first strap end is positively locked on the second strap end to prevent the strap ends from working free from one another. No welding or bending is required to lock the strap ends to one another.
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