Useful technology for your idea
Hydrodynamic controlled-inlet thrust bearings
are interchangeable with existing bearings,
and for new machines stack height is reduced
30%.† The bearing increases load capacity,
reduces power losses, and reduces lubrication
system size with 40% less flow required.
A controlled-inlet oil pocket with hydraulic-feed piston
supplies cool oil to the hydrodynamic pad with fewer
parts and a simpler assembly than other directed-lube
designs. Result: higher load capacity and efficiency.
The inlet feeds each pad's front edge. Fluid flows
radially in and axially up to the cool-oil pocket. In
the pocket, cool oil mixes with the hot boundary-layer
carryover oil. Optimized mixing geometry at the center
one-third of the pad's front edge minimizes local temperatures
downstream, near the pad's trailing edge.
The controlled inlet consists of a precavity and hot-oil
director that removes some of the hot oil from the previous
pad, radially out of the bearing. At its front edge,
the wiper sheds some of the boundary fluid to further
reduce carryover oil. The reduced boundary layer mixes
in the pocket cavity with cool inlet oil before entering
Jim Ball, Orion Corp., 1111 Cedar Creek Rd.,
Grafton, WI 53024-0084, PHONE(414) 377-2210.
Insulated bolts and a thermal gasket reduce
heat transfer from the engine block to the
fuel pump and fuel, and keeps lubricated inside
fuel-pump cavity for pump arm lubrication.
In racing, centrifugal force throws hot oil into the
fuel-pump housing, resulting in increased heat transfer
to fuel and oil leaks. Working in conjunction with Robert
Yates Racing, Seals-it solved the problem using a molded
neoprene seal bonded to an alloy plate to seal around
the pump arm.
An insulating gasket and sleeved, insulated bolts also
cut down on the engine heat transferred to the pump,
further reducing fuel temperatures.
Designed for Robert Yates Belt Drive systems, the kit
keeps hot engine oil from entering the fuel pump cavity
on Ford, GM, and MOPAR applications.
Skip Matczak, Seals-it, 364 Tolland St.,
East Hartford, CT 06108, FAX (860) 528-6552.
Seal threaded ports with a flick of the
wrist using FastMate positive clamp lever
Repetitive leak testing of thousands of parts can be
very hard on operators hands and wrists. To reduce the
chance of carpal tunnel syndrome or other injury during
static or dynamic testing of high pressure hydraulic
components, positive clamp lever action eliminates the
twisting and turning required when using hands or a
The split collet design locks quickly and securely
in female threads, providing a safer and cleaner testing
process for filling, evacuating, and pressure-test sealing.
The connector instantly grips and seals up to 5,000
psi, for water dunk, pressure decay, or mass spectrometer
Jim Poulton, FasTest Inc., 2315 Hampden Ave.,
St. Paul MN 55114, PHONE (612) 645-6266.†
Cool optical sandwich
Air flow between the two optical elements
efficiently cools each optic axially, resulting
in lower temperature and reduced stress.
To overcome thermal distortion and spherical aberration
issues of high-power ZnSe optics, a new approach to
transmissive-optics design uses two optics in an "air-spaced
doublet" arrangement to remove heat axially.
Turbulent-cooling gas, injected at high flow rates
in the space between the two optics, reduces the optics
absolute temperature. Because the axial-thermal path
is shorter, the design efficiently lowers both the internal
"lifetime-reducing" stress, and the hoop stress
at the edge. A reduced radial thermal gradient virtually
eliminates temperature-induced spherical aberration.
With these improvements using the Turbo-Cooledr Optical
Assemblies, and infrared window material--ZnSe in particular,
but also CdTe, GaAs, and ZnS--withstand much higher
power levels than a single optic, while still providing
Frank Foote, Laser Power Optics, 12777 High
Bluff Drive, San Diego, CA 92130, PHONE (800) 262-5273.