Abrading – Machine – Stationary tool
Reexamination Certificate
2006-10-17
2006-10-17
Ackun, Jr., Jacob K. (Department: 3723)
Abrading
Machine
Stationary tool
C451S555000, C451S556000, C076S082000, C076S088000
Reexamination Certificate
active
07121935
ABSTRACT:
A blade sharpener (10) comprises sharpening strip providing carriers (12) and (14) each including an obliquely extending linear sharpening strip providing rod (16) and carrier movement non-interference guiding means in the form of a slot defining formation formed by facing rail pairs (18), (20) facing one another across a slot (22). The rail pairs (18) and (20) form part of a carrier support frame (24) to which the carriers (12), (14) are mounted to be displaced in diametrically opposed directions and along the spacings formed between the rails of the rail pairs (18), (20). A crossover point (28) is defined between the rods (16) within which the cutting edge of the blade of a knife is in an abrasion fashion moved during a sharpening action. The crossover point (28) is constrained to move along a linear sharpening path extending along the slot (22) during sharpener use. The carriers (12), (14) are biased by springs (26) to cause the return of the crossover point (28) to an inter strip commencement crossover position.
REFERENCES:
patent: 1894579 (1933-01-01), Blankner
patent: 1909743 (1933-05-01), Blankner
patent: 4674356 (1987-06-01), Kilgore
patent: 5440953 (1995-08-01), Gangelhoff et al.
Ackun Jr. Jacob K.
Law Office of Marc D. Machtinger, Ltd.
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