US 7,523,995 C1 (13,166th)
Milling machine
Federico B. Rio, Bologna (IT); Dean R. Potts, Maple Grove, MN (US); Gregory H. Dubay, Bologna (IT); and Dario Sansone, Castello d'Argile (IT)
Filed by Federico B. Rio, Bologna (IT); Dean R. Potts, Maple Grove, MN (US); Gregory H. Dubay, Bologna (IT); and Dario Sansone, Castello d'Argile (IT)
Assigned to Caterpillar Inc.
Reexamination Request No. 90/019,472, Apr. 5, 2024.
Reexamination Certificate for Patent 7,523,995, issued Apr. 28, 2009, Appl. No. 11/180,688, Jul. 14, 2005.
Claims priority of application No. TO2004A000499 (IT), filed on Jul. 15, 2004.
Ex Parte Reexamination Certificate issued on Jan. 30, 2026.
Int. Cl. E01C 23/088 (2006.01)
CPC E01C 23/088 (2013.01)
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
Claims 1-15, 17-42 and 44 were previously cancelled.
Claims 16, 43 and 45-63 are cancelled.
45. A self-propelled machine, comprising:
a machine frame supportable by a plurality of ground engaging units;
support means for supporting said machine frame, said support means being connected to said machine frame and including a generally vertically oriented lifting column having a lifting column axis and being connected to at least one of said ground engaging units;
first actuatable means for moving said at least one ground engaging unit between projecting and retracted positions relative to said machine frame;
second actuatable means for rotating said at least one ground engaging unit to maintain the same rotational direction of said at least one ground engaging unit in each of said projecting and retracted positions, said second actuatable means being positioned at a location spaced apart from said first actuatable means along an axis of said lifting column; and controller means for coordinating the actuation of said first and second actuatable means.