192 clutches and power-stop control – Clutches – Operators
Reexamination Certificate
2007-07-31
2007-07-31
Bonck, Rodney H. (Department: 3681)
192 clutches and power-stop control
Clutches
Operators
C192S08200T
Reexamination Certificate
active
11079040
ABSTRACT:
A hydraulically controlled fan drive system (12) having a method of engagement includes a housing assembly (20) containing a hydraulic fluid (48) and an engaging circuit (36). The engaging circuit (36) includes a pitot tube (152) coupled within the housing assembly (20) that receives at least a portion of the hydraulic fluid (48). An engaging circuit (36) engages the housing assembly (20) to a fan shaft (44) in response to supply of the hydraulic fluid (48) from the pitot tube (152). An electrical control circuit (40) having a relief valve assembly (225) coupled to a main controller (176) is used to control the fluid pressure within the pitot tube (152) that controls the engagement of the housing assembly (20).
REFERENCES:
patent: 2960202 (1960-11-01), Stevens et al.
patent: 3402793 (1968-09-01), Scholl
patent: 3804219 (1974-04-01), Cummings, III
patent: 4546742 (1985-10-01), Sturges
patent: 4555910 (1985-12-01), Sturges
patent: 4899785 (1990-02-01), Inokuchi
patent: 4899861 (1990-02-01), Cummings, III
patent: 4913102 (1990-04-01), Ohmura et al.
patent: 5307644 (1994-05-01), Cummins et al.
patent: 5483927 (1996-01-01), Letang et al.
patent: 5531190 (1996-07-01), Mork
patent: 5584371 (1996-12-01), Kelledes et al.
patent: 5855266 (1999-01-01), Cummings, III
patent: 5937979 (1999-08-01), Cummings
patent: 5947247 (1999-09-01), Cummings, III
patent: 6067489 (2000-05-01), Letang et al.
patent: 6164322 (2000-12-01), Najmolhoda et al.
patent: 6286535 (2001-09-01), Harms et al.
patent: 6772714 (2004-08-01), Laird et al.
patent: 2003/0172883 (2003-09-01), Shiozaki et al.
patent: 2004/0011306 (2004-01-01), Liederman et al.
patent: 1 510 716 (2005-03-01), None
Ignatovich James E.
Malott Theodore A.
Pickelman Dale
Artz & Artz P.C.
Bonck Rodney H.
Borg-Warner Inc.
Deiegielewski, Esq. Greg
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