Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1985-06-27
1986-01-14
Goldberg, Howard N.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
2940207, 2940218, 228193, 416213A, 416224, 416241R, B21K 304, B23P 1502, B23P 1504
Patent
active
045638012
ABSTRACT:
The inlet and/or outlet edge of a blank which is to be converted into the vane of an impeller for use in a centrifugal pump is reinforced by providing an exposed surface of the blank with a pair of contiguous recesses which extend along the edge and the deeper of which is immediately adjacent to the edge. The recesses are then filled with metallic armoring material by cladding so that some of the surplus extends beyond the recesses and/or beyond the edge. In the next step, the surplus of armoring material is removed by one or more material removing tools, together with a portion of the blank in the region of the edge so that the exposed surface is provided with a fresh edge which is defined by the armoring material.
REFERENCES:
patent: 1755321 (1930-04-01), Hendrickson
patent: 2615236 (1952-10-01), Stulen et al.
patent: 3148954 (1964-09-01), Haas
patent: 3564689 (1971-02-01), Hirtenlechner
patent: 3928901 (1975-12-01), Schilling et al.
patent: 4241110 (1980-12-01), Ueda et al.
Rupp Werner
Schaff Werner
Schill Jurgen
Urban Jorg
Goldberg Howard N.
Klein, Schanzlin & Becker Aktiengesellschaft
Kontler Peter K.
Wallace Ronald S.
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