IIIH
US007094140B2
(12) United States Patent ao) Patent No.: Us 7,094,140 B2
Palushi et al. (45) Date of Patent: Aug. 22,2006
Related U.S. Application Data
(63) Continuation-in-part of application No. 10/453,310, filed on Jun. 3, 2003, now abandoned.
(51) Int. CI.
B24B 33/00 (2006.01)
(52) U.S. CI 451/548; 451/510; 451/521;
451/353
(58) Field of Classification Search 451/548 550,
451/490, 509, 510, 514, 515, 520-522, 353,
451/360
See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
2,201,196 A 5/1940 Williamson
2,740,239 A 4/1956 Ball et al.
2,778,169 A 1/1957 Ball
2,876,086 A 3/1959 Raymond
3,092,937 A * 6/1963 Tocci-Guilbert 451/509
3,315,420 A * 4/1967 Moberg 451/510
3,466,877 A * 9/1969 Foley et al 405/205
3,491,494 A * 1/1970 Mackay, Jr 451/509
