Abrading – Frame or mount – Portable abrader
Patent
1993-08-17
1994-12-13
Lavinder, Jack W.
Abrading
Frame or mount
Portable abrader
76 821, 451262, 451293, 451451, B24B 342, B24B 2300, B24B 4100, B24B 5505
Patent
active
053719778
ABSTRACT:
A blade sharpening device (8) easily connectable to a source of rotating power, such as a battery powered hand drill (66), and having a guard member (14), a selectably locatable handle member (16/16') attached to the guard member, and hand-manipulatable means for maintaining the grinding surfaces of the sharpening device at a desired grinding angle and moving it along the length of the blade edge. The guard extends completely over the width of the rotatable sharpening members (10 & 58) and over about eighty (80.degree.) degrees or approximately a quadrant (ninety degrees) of their sides and provides an upper, curved surface (18) or a side, flat surface (19), depending on which handle location (30/28) is used, against which the user's hand can be rested for greater control and stability of the sharpener when in use on, for example, a lawn mower blade (62) which is still attached to the lawn mower drive shaft (63) at the underside of the lawn mower housing (64). This on-site, in-place blade sharpening capability eliminates the necessity of removing the blade for its sharpening, while still allowing easy and safe sharpening of the blade even in such awkward circumstances.
REFERENCES:
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patent: 1918575 (1933-07-01), Van Berkel
patent: 1977088 (1934-10-01), Richardson
patent: 2921416 (1960-01-01), Shanahan
patent: 2993312 (1961-07-01), Holland et al.
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patent: 3585980 (1971-06-01), Mellor
patent: 3648414 (1972-03-01), Thompson
patent: 3800480 (1974-04-01), Keating
patent: 5172680 (1992-12-01), Swan
Lavinder Jack W.
Pugh C. Emmett
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