192 clutches and power-stop control – Clutches – Automatic
Patent
1992-03-05
1993-09-21
Lorence, Richard M.
192 clutches and power-stop control
Clutches
Automatic
192 42, 192104C, F16D 4112, F16D 4314
Patent
active
052460940
ABSTRACT:
A pneumatic starter (10) incorporates a pawl and ratchet clutch assembly (50) having a ratchet member (46) mounted to a drive member (40) powered by an air expansion turbine (20), and a plurality of pawls (48) disposed circumferentially about the ratchet member (46) and operable in engagement therewith to transmit rotational drive torque from the drive member (40) to a driven member (60). Each of the pawls (48) is supported on a pivot pin (52) for pivotal movement into and out of engagement with the ratchet member (46) about its pivot axis (55). Preload springs (54) are provided for biasing the pawls (48) to pivot radially inwardly into engagement with the ratchet member (46). A weight ball (82) is disposed in a slot (80) extending along each pawl (48) so as to define a travel path between the toe end (47) and the heel end (48) thereof. As the ball (82) rolls along the travel path in response to the rotational speed of the driven member (60), the center of gravity (93) of the pawl shifts relative to its pivot axis (55).
REFERENCES:
patent: 709900 (1902-09-01), Gurney et al.
patent: 1219698 (1917-03-01), Brackett
patent: 1753825 (1930-04-01), Ford
patent: 1767593 (1930-06-01), Laabs
patent: 3727733 (1973-04-01), Mrazek
patent: 4116314 (1978-09-01), Ackerman
patent: 4187728 (1980-02-01), Mazzorana
patent: 4899534 (1990-02-01), Sorenson
patent: 4914906 (1990-04-01), Burch
patent: 4926631 (1990-05-01), Sorenson
Army Donald E.
Tichiaz Gordon D.
Habelt William W.
Lorence Richard M.
United Technologies Corporation
LandOfFree
Pawl and ratchet clutch having pawl with shifting center of grav does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pawl and ratchet clutch having pawl with shifting center of grav, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pawl and ratchet clutch having pawl with shifting center of grav will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1044300