Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1997-01-31
1999-10-19
Watson, Robert C.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
B23P 1904
Patent
active
059667931
ABSTRACT:
Portable cylinder-powered tools and related power extraction methods for removing filter bags during baghouse filter servicing. The preferred tools comprise elongated, pneumatic cylinders provided with handles for easy grasping. Control valves emanating from a manifold activate the cylinder. A rigid extractor and a companion foot extend downwardly from the cylinder. The extractor terminates in a wedge-like prong that penetrates the tubesheet orifice and engages a baghouse filter. In a first embodiment the extractor is fixed and the foot is ram driven. A second tool directly controls the extractor with the cylinder ram, and the foot is fixed to the cylinder to brace the tool when the extractor is forcibly retracted. The extractor barb first deforms and then captivates the filter. The ram forces the extractor and the prong upwardly, and the bag filter is forcibly dragged out of the tubesheet orifice. The methods described herein effect the power removal of baghouse filters with extractor prong arrangements of the character described.
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Carver Stephen D.
Idea Specialty Services Inc.
Watson Robert C.
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