Pumps – Motor driven – Magnetostrictive chamber
Patent
1995-06-14
1997-01-28
Thorpe, Timothy
Pumps
Motor driven
Magnetostrictive chamber
4174132, 3031164, F04B 1700
Patent
active
055972926
ABSTRACT:
An ultrasonic pump having a first housing connected to a second housing to create a cavity therebetween. The first housing has a central stem that extends into the cavity with a passage for connecting the cavity with an outlet port. The second housing has an inlet port for communicating hydraulic fluid to the cavity. A plurality of piezoelectric disc are located on the stem by a first diaphragm to defined a actuation chamber within the cavity. The first diaphragm engages the first housing and stem to isolate the piezoelectric disc from hydraulic fluid supplied to the cavity and place a predetermined axial force on the piezoelectric disc. A second diaphragm located in the first and second housing has first and second surfaces which are substantially equal distances from the passage and the inlet port. Thereafter, air is bleed from the cavity to assure that only hydraulic fluid is present in the cavity. The piezoelectric disc are connected to a source of electrical energy and in response to an excitation signal develop a fluctuating force. The fluctuating force has an axial component and a radial component and the axial component alone is communicated to the first diaphragm. After the axial component of the fluctuating force overcomes the predetermined axial force, the fluid pressure of the hydraulic fluid in the cavity changes as a function of the axial component force. This change in fluid pressure causes sequential movement of first and second surfaces of the second diaphragm toward the inlet port and passage and as a result hydraulic fluid is transmitted from the cavity through the passage to the outlet port.
REFERENCES:
patent: 4231287 (1980-11-01), Smiley
patent: 4738493 (1988-04-01), Inagaki et al.
patent: 5378120 (1995-01-01), Taig
Document Number Abs vol. 7 No. 257 (M-256) 1402 Date Nov. 1983 Country Japan.
Rhee Seong K.
Taig Alistair G.
Towers Kenneth S.
Allied-Signal Inc.
McAndrews, Jr. Roland G.
McCormick Jr. Leo H.
Thorpe Timothy
LandOfFree
Piezoelectric booster pump for a braking system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Piezoelectric booster pump for a braking system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric booster pump for a braking system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-938382