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Progressive Dynamics, Inc. Patents
Assignee:
Progressive Dynamics, Inc.
Address:
Marshall, MI
No. of patents:
48
Patents:












Patent Number Title Of Patent Date Issued
RE40354 Electrical housing with non-integral cable outlet port member June 3, 2008
A housing for electrical devices such as connectors, circuit breakers, and fuse panels. A cable outlet port member is separate from the housing to provide unidirectional resistance to movement of a cable relative to the housing. The non-integral relationship permits the members to be rep
RE39461 Electrical busbar and method of making same January 9, 2007
A housing for electrical devices such as connectors, circuit breakers, and face panels. A cable outlet port member is separate from the housing to provide unidirectional resistance to movement of a cable relative to the housing. The non-integral relationship permits the members to be rep
D551792 12 volt fluorescent light fixture September 25, 2007
D411635 Light fixture June 29, 1999
D409139 Converter/charger May 4, 1999
D376437 Recreational vehicle light fixture December 10, 1996
D369224 Recreational vehicle light fixture April 23, 1996
D365082 Electrical power converter December 12, 1995
D362507 Upper body thermal blanket September 19, 1995
D359810 Mini-surgical thermal blanket June 27, 1995
D339203 Wall light fixture September 7, 1993
D326926 Recessed light fixture for recreational vehicle or the like June 9, 1992
D304088 Door operated convenience light for storage areas October 17, 1989
7782002 Power converter August 24, 2010
A switch-type power converter comprising an PET switch operating in a variable duty cycle mode under the control of a Unitrode 3846 integrated circuit controller. Indications of excess input voltage and reverse battery connections are provided by circuits including an element which p
6184649 Power converter with desulfation mode February 6, 2001
A power converter supplies a charging current to a rechargeable battery responsive to a control module. The control module includes a microcontroller, a memory coupled to the microcontroller and power converter code. The power converter code causes the microcontroller to determine a
5982643 Power converter with selectively variable output and controller and display system therefor November 9, 1999
A system to control the output voltage of a power converter in response to a specific load battery condition. The system contains a power converter, a TCMS interface attached thereto and a controller for selectively and/or adaptably changing the magnitude of converter output voltage. A c
5728145 Thermal blanket with central air inlet March 17, 1998
A thermal blanket for flowing temperature controlled air upon a patient wherein the blanket is inflated with air and orifices within the blanket permit the air to flow upon the patient. The improvement includes the locating of the air inlet at a central blanket location in the patient's
5687066 Power converter with overvoltage protection November 11, 1997
A switched power converter for a recreational vehicle includes a housing and a switched power supply. The switched power supply has a switch and at least one energy storage component, the switch controlling the supply of power to the energy storage component. The output of the energy sto
5600550 Power converter for recreational vehicles and the like February 4, 1997
A switched power converter for a recreational vehicle includes a housing and a switched power supply. The switched power supply has a switch and at least one energy storage component, the switch controlling the supply of power to the energy storage component. The output of the energy sto
5486205 Diffused air heating system January 23, 1996
An air diffuser system for a medical thermal blanket wherein air forced over an elongated heat exchanger is substantially uniformly distributed over the heat exchanger and a thermal sensor located downstream over the heat exchanger to eliminate localized hot and cold "spots" and permit
5443488 Thermal blanket with surgical access August 22, 1995
A disposable pneumatic thermal blanket for controlling a patient's body temperature wherein the blanket includes structure for providing access through the blanket for surgical purposes. The inflatable blanket consists of upper and lower thermoplastic sheets heat sealed at the periphery
5392847 Thermal medical blanket using internal subtube February 28, 1995
A pneumatic, disposable, temperature control blanket pressurized with a heated or cooled air comprises an inflated envelope having a lower sheet having openings formed therein for impinging the air upon a patient. Air is introduced into the blanket envelope at a single inlet port, and an
5304217 Method of controlling air flow from an inflated blanket April 19, 1994
The invention pertains to the method and apparatus for forming air flow control orifices in a patient body temperature regulating blanket consisting of an inflated envelope defined by thin plastic film wherein temperature controlled air flows through the blanket orifices upon the pat
5300098 Patient warmer heater blower control April 5, 1994
A hypothermic therapy heater blower control system for use with patient warming blankets flowing warm air over the patient wherein the control system includes a data display indicating the temperature of the supplied air and the circuitry includes audible and visual alarms to indicate
5283718 Fiber optic arc lamp system February 1, 1994
The invention pertains to a fiber optic lamp system such as those employed in medical diagnostic systems using a cabinet containing a power supply having a front extendible drawer containing a 250 watt focused beam metal halide arc lamp mounted in a removable bracket which includes a sen
5272610 Light fixture with trim strip retainer December 21, 1993
A light fixture having an arcuate convex lens includes a decorative strip extending across the lens convex configuration usually adhered thereto by an adhesive mounted on the strip. Decorative strip end retainers are homogeneously defined at lateral edges of the lens and comprise recesse
5265599 Patient temperature control blanket with controlled air distribution November 30, 1993
A disposal pneumatic temperature controlled blanket consisting of flexible upper and lower sheets interconnected at their peripheries to define an inflatable envelope. The lower sheet outer surface is provided with a friction producing layer and a plurality of orifices are formed in the
5246656 Method for forming air flow control orifice in an inflated blanket September 21, 1993
The invention pertains to the method for forming air flow control orifices in a patient body temperature regulating blanket consisting of an inflated envelope defined by thin plastic film wherein temperature controlled air flows through the blanket orifices upon the patient's body. The b
5243500 Fiber optic arc lamp system September 7, 1993
The invention pertains to a fiber optic lamp system such as those employed in medical diagnostic systems using a cabinet containing a power supply having a front extendible drawer containing a 250 watt focused beam metal halide arc lamp mounted in a removable bracket which includes a sen
5230555 Fiber optic arc lamp system July 27, 1993
The invention pertains to a fiber optic lamp system such as those employed in medical diagnostic systems using a cabinet containing a power supply having a front extendible drawer containing a 250 watt focused beam metal halide arc lamp mounted in a removable bracket which includes a sen
5125238 Patient warming or cooling blanket June 30, 1992
A disposable patient heating or cooling blanket having three layers of flexible sheeting two of which form an air chamber, the third of which is a comfortable layer for contact with the patient and which, having a greater friction characteristic, aids in keeping the blanket in place on
5034663 Power source for metal halide lamps and the like July 23, 1991
A power supply for a gas discharge lamp includes a current regulator for regulating the current supplied to a lamp and current steering means for steering current from the current regulator in alternating directions through an isolation transformer primary winding, the secondary winding
5008598 Fluorescent lighting control circuit April 16, 1991
A control circuit for fluorescent lamps having gas filled tubes and a pair of discharge electrodes in the tubes includes a transformer, a gated switching device and a control signal generating circuit. The transformer has a secondary winding connected with the lamp discharge electrodes a
5003449 Light fixture with secondary reflector March 26, 1991
The invention relates to an improvement in light fixtures of the type having a base, a socket receiving a bulb, and a primary reflector defined on the base located in relatively close proximity to the bulb. The improvement consists of a secondary reflector located between the primary
4934589 Compartmental packaging system with separate access June 19, 1990
A shipping container assembly formed of cut and scored fiber board having a rectangular shape including side walls, closeable end flaps forming the top and bottom of the container and a plurality of inner dividers dividing the interior of the container into at least two adjacent sub-comp
4930056 Snap-on frame for light fixtures May 29, 1990
The invention relates to a snap-on frame for recreational vehicle light fixtures wherein the frame is formed of a synthetic plastic material and is added to the fixture to improve the appearance, and may also be employed to convert a fixture capable of being recess mounted to a surface
4902958 Incandescent light regulation and intensity controller February 20, 1990
A regulation and intensity controller for prolonging the life of an incandescent lamp controls the root mean square voltage across the lamp by converting AC voltage to a DC voltage and by applying the DC voltage to the lamp through a switch and an inductor in series connection with the
4872099 Light fixture October 3, 1989
A light fixture, particularly suitable for recreational vehicles, such as campers, trailers, boats and vans, consisting of a base having a reflector, lens and a bulb controlled by a slide switch. The switch is received within a "drop-in" mounting formed in the base and is retained in
4795995 Method and apparatus for producing electromagnetic surveillance fields January 3, 1989
A system for producing alternating electromagnetic fields for use in theft detection and surveillance systems, including an arrangement of field-generating inductance coils for disposition on opposite sides of a passage to be monitored by the electromagnetic field produced by such co
4744018 Regulated power supply May 10, 1988
A voltage-agile, controlled output, regenerative-feedback power supply control circuit in which a power source is switched by a pair of controlled switch elements so as to supply a selective amount of output power to a load while also selectively completing a regenerative power feedb
4668942 Signal analysis apparatus including recursive filter for electromagnetic surveillance system May 26, 1987
The specification discloses a digital/analog signal analyzer for an electromagnetic surveillance system. Included is a notch filter having a switched capacitor filter controlled by a phase lock loop for nulling a time-varying driving frequency from the received signal. The analyzer f
4634975 Method and apparatus for producing electromagnetic surveillance fields January 6, 1987
Methods and apparatus for producing alternating electromagnetic fields for use in theft detection and surveillance systems include individual series-type electrical drive circuits for separately energizing each of the field-generating coil windings with maximum efficiency and control,
4535323 Preamplifying and signal processing method and apparatus for theft detection systems August 13, 1985
Improvements in theft-detection or surveillance systems of the type in which an alternating electromagnetic field is established across a doorway or other portal and is monitored to detect the presence within the field of a marker or tag member comprising a small strip of permalloy or li
4524350 Detection logic and signal processing method and apparatus for theft detection systems June 18, 1985
In an electromagnetic passage surveillance system, first and second receiver means are employed in mutually-spaced locations across a guarded portal to detect perturbations in an electromagnetic field extending across the portal, resulting from presence within the field of a high-per
4394706 Power converter for recreational vehicles July 19, 1983
A power converter for recreational vehicles comprises a two-part housing construction having the ends of the electrical components of the converter telescopically received in aligned sockets formed in each of the mating housing members, whereby the electrical components are captured
4285033 Lampholder--switch module August 18, 1981
The invention pertains to a lampholder and switch module which may be readily installed in a lamp fixture, and is particularly suitable for automotive and recreational vehicle use. A housing includes a lamp socket having electrical contacts located therein, and a switch slidably mounted
4010410 Recreational vehicle converter-battery fast charging circuit March 1, 1977
A direct current power supply system for recreational vehicles having an auxiliary chargeable battery wherein a transformer powered converter is utilized to rectify alternating current into direct current, and where the circuitry includes a battery fast charging circuit and control utili
3985157 Adjustable regulator vent cover October 12, 1976
A vent cover for gas pressure regulators exposed to adverse weather conditions wherein the vent cover is mounted upon the vented neck of a gas regulator and is rotatably adjustable relative to the neck such that a vent opening defined in the cover may always be oriented downwardly re

 
 
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