Expansible chamber devices – Relatively movable working members – First working member moves second coaxial working member...
Patent
1992-07-08
1994-05-17
Denion, Thomas E.
Expansible chamber devices
Relatively movable working members
First working member moves second coaxial working member...
92 48, 92 98R, 92130A, 2988806, 29521, 403338, 403341, F01B 700
Patent
active
053118090
ABSTRACT:
The present invention provides a tamper-resistant fluid-operated brake actuator having a power spring housed within a head or cap which is attached to a flange case having one or more diaphragms or pistons responsive to changes of fluid pressure within the brake actuator chambers. In one embodiment, the head is attached to the flange case by a substantially continuous curvilinear annular metal retaining member which must be inelastically deformed or destroyed in order to remove the head from the flange case, thus rendering tampering more difficult. In another embodiment, the annular metal retaining member of the present invention is integral with the actuator head and which is metal-spun or the like onto the flange case.
REFERENCES:
patent: 2744543 (1956-08-01), Brady, Jr.
patent: 3101133 (1963-08-01), House et al.
patent: 3101219 (1963-08-01), Herrera
patent: 3158930 (1964-12-01), Wesstron
patent: 3158930 (1964-12-01), Wesstrom et al.
patent: 3244079 (1966-04-01), Herrera
patent: 3478519 (1969-11-01), Eggstein
patent: 3549137 (1970-12-01), Contreras et al.
patent: 3736842 (1973-06-01), Valentine
patent: 3908520 (1975-09-01), Ma
patent: 3909919 (1975-10-01), Miyabayashi et al.
patent: 4191096 (1980-03-01), Benjamin
patent: 4303006 (1981-12-01), Burke et al.
patent: 4565120 (1986-01-01), Gray et al.
patent: 4601600 (1986-07-01), Karlsson
patent: 4604944 (1986-08-01), Tsubouchi
patent: 4850263 (1989-07-01), Rumsey et al.
patent: 4960036 (1990-10-01), Gummer et al.
patent: 5067391 (1991-11-01), Choinski et al.
Brooks David W.
Choinski Graydon J.
Gummer Allen L.
Denion Thomas E.
Indian Head Industries Inc.
LandOfFree
Method of making tamper-resistant brake actuators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of making tamper-resistant brake actuators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making tamper-resistant brake actuators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-869698