Strong,
reliable,
enduring,?
STEEL-SPRING FLEXIBLE COUPLINGS
Aqua Signal Names Baass
Executive Vice President
Aqua Signal Corporation, Batavia,
El., has appointed Gerhard M. Baass
as executive vice president to man-
age its marine lights business in North
America.
Mr. Baass was executive vice presi-
dent of ZF of North America, Inc. for
10 years. ZF is a major supplier of
marine transmissions and automo-
tive drive train components.
Aqua Signal is one of the world's
leading suppliers of ship lighting sys-
tems including navigation lights,
search lights, interior and exterior
lighting for commercial vessels, mo-
tor boats and yachts, naval ships and
offshore platforms.
The main production facility is in
Bremen, Germany.
For detailed information on Aqua
Signals lighting products,
Circle 32 on Reader Service Card
High Seas Maritime
Services Opens
In Houston, Texas
The president of High Seas Mari-
time Services, Jim P. Stevens, has
announced the company's grand
opening in Houston, Texas.
High Seas Maritime Services deals
with brokerage and chartering, heavy
lift transportation, ocean towage and
worldwide ship delivery.
The company's address is P.O. Box
842275, Houston, Texas 77284-2275;
tel: (713) 859-8242; fax: (713) 463-7842.
For more information,
Circle 33 on Reader Service Card
MARKISCHES WERK HALVER
Circle 228 on Reader Service Card
November, 1992 23
Circle 276 on Reader Service Card
LO-REZ helical steel-spring couplings, with
their low, constant and accurately-controlled
torsional stiffness factors, provide excellent
torsional characteristics for geared marine
reciprocating propulsion systems, engine and
reciprocating compressor drives of many vari-
eties, locomotive drives, etc.
LO-REZ was one of the first coupling manu-
facturers, 40 years ago, to recognize the im-
portance of torsionally-soft couplings in
power transmission systems, particularly in
reciprocating, variable speed systems and
those involving gearing.
HF (HUB-FLANGE) ARRANGEMENT
VISCOUS TORSIONAL
VIBRATION DAMPERS
156 WEST 8'" AVE.-, VANCOUVER, B.C., CANADA V5Y 1N2 • TEL. (604) 879-2974 • FAX (604) 879-6588
MWH COMPLETE VALVES - BASIS
FOR A LONG SERVICE LIFE
STEEL-SPRING
VIBRATION ISOLATORS
BR4-LS
LO-REZ manufactures a broad
line of sturdy steel-spring vib-
ration isolators. The BR series
isolators (shown here) with
their ample thrust capacity
and rubber-cushioned, adjust-
able stops (to limit excess ver-
tical excursion) are widely
used for marine auxiliary,
other mobile and seismic
applications. No external
chocks are required. BR-T
series isolators have spe-
cial spring-loaded thrust
housings to carry the full propellor thrust effects, the full engine torque, and still
provide excellent isolation. They are ideal isolation supports, also, for machinery
rafts in ships.
With the growing demand for acoustical and vibration attenuation treatment in
ships, the isolation of main propulsion engines is fast becoming a necessity rather
than a luxury. LO-REZ has many years of experience in analyzing the dynamics of
soft-mounted propulsion engines, and has the products to provide integrated iso-
lation systems which include two-directional thrust-type RT flexible couplings for
the gear output shaft.
Designed & Manufactured by
LO-REZ VIBRATION CONTROL LTD.
Don't do things by halves.
Use the MWH combination of
Nimonic valve, water-cooled
cages or seats and Turnomat®
valve rotator.
The advantages:
• •
all components from
one supplier
total compatibility of valve lj
and valve seat angle
quick exchange of valves,
short down time
longer service life due
to the optimal
k combination of j
I,, components. A
Markisehes Werk GmbH • P.O.Box 1442 • D-5884 Halver
Phone (2353) 72274 • Telex 8263649 mwhd • Telefax (2353) 72255
LO-REZ manufactures both the conventional un-
tuned viscous dampers and its new patented
mechanically-tuned viscous dampers. Extensive
research has shown that the single and compound
tuning methods, as developed by LO-REZ, reduce
resonant amplitudes by some 40% and 60%, res-
pectively, of the untuned values.
Aluminum alloy ribbed housings of robust design
provide cooler operation with less variance be-
tween cold and hot performance. Dampers are
bolted construction and are serviceable with facto-
ry rebuild program. LO-REZ forced-damped com-
puter program handles very large and complex
power trains and provides for optimization of
damper size and characteristics. Standard damper
sizes are available as well as custom-engineered
models.
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