Brakes – Wheel – Axially movable brake element or housing therefor
Reexamination Certificate
2006-01-12
2010-10-12
Siconolfi, Robert A (Department: 3657)
Brakes
Wheel
Axially movable brake element or housing therefor
C188S072700, C188S158000, C188S162000
Reexamination Certificate
active
07810616
ABSTRACT:
An electric direct-acting actuator is proposed which can maintain a large power increasing function without mounting a separate speed reducer. A plurality of planetary rollers (7) are disposed between the radially outer surface of a rotor shaft (5) of an electric motor and the radially inner surface of an outer ring member (1) fixed in position around the rotor shaft (5) so as to be rotatable about the rotor shaft (5) and about their own axes when the rotor shaft (5) rotates. A helical rib is defined by a rib member (9) engaged in a helical groove (8) formed in the radially inner surface of the outer ring member (1). The helical rib is engaged in circumferential grooves (10) formed in the radially outer surface of each planetary roller (7) at the same pitch as the turns of the helical rib. Thus, the rotary motion of the rotor shaft (5) is converted to a linear motion of the planetary rollers (7), so that it is possible to ensure a large power increasing function without mounting a separate speed reducer.
REFERENCES:
patent: 4615229 (1986-10-01), Granbom
patent: 4811618 (1989-03-01), Takayama
patent: 4865162 (1989-09-01), Morris et al.
patent: 5788023 (1998-08-01), Schoner et al.
patent: 6158558 (2000-12-01), Bill et al.
patent: 6230855 (2001-05-01), Holding
patent: 6257377 (2001-07-01), Schumann
patent: 6305508 (2001-10-01), Schumann
patent: 6325180 (2001-12-01), De Vries et al.
patent: 6349801 (2002-02-01), Koth et al.
patent: 6367592 (2002-04-01), Kapaan et al.
patent: 6367597 (2002-04-01), De Vries et al.
patent: 6554109 (2003-04-01), Olschewski et al.
patent: 53-56473 (1978-05-01), None
patent: 54-65262 (1979-05-01), None
patent: 63-96359 (1988-06-01), None
patent: 6-327190 (1994-11-01), None
patent: 8-338461 (1996-12-01), None
patent: 2003-343620 (2003-12-01), None
NTN Corporation
Siconolfi Robert A
Sy Mariano
Wenderoth , Lind & Ponack, L.L.P.
LandOfFree
Electric direct-acting actuator and electric brake device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric direct-acting actuator and electric brake device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric direct-acting actuator and electric brake device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4211266