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Dusan J Hvolka

from Salt Lake City, UT
Age ~83

Dusan Hvolka Phones & Addresses

  • 3025 Dickens Pl, Salt Lake City, UT 84108 (801) 328-2493
  • 3115 E Lion Ln STE 160, Salt Lake Cty, UT 84121
  • Carlsbad, CA
  • San Diego, CA

Professional Records

License Records

Dusan Hvolka

Address:
Salt Lake City, UT
License #:
168766-2202 - Expired
Category:
Engineer/Land Surveyor
Type:
Professional Engineer

Business Records

Name / Title
Company / Classification
Phones & Addresses
Dusan Hvolka
Vice President
DJH Engineering Center Inc
Engineers - Mechanical
6455 S 3000 E STE 205, Salt Lake City, UT 84121
(801) 583-3934, (801) 943-5498
Dusan Hvolka
President
Djh Engineering
Engineering Svcs
3115 Lion Ln #160, Salt Lake City, UT 84121
(801) 943-5237
Dusan Hvolka
Executive Vice President
DJH ENGINEERING CTR
Structural Engineer · Engineers-Mechanical
3115 Lion Ln, Salt Lake City, UT 84121
(801) 583-3934, (801) 943-5498
Dusan Hvolka
Vice President, Executive Vice-President
DJH Engineering Center Inc
Mechanical or Industrial Engineering · Engineering Services
6465 S 3000 E STE 205, Salt Lake City, UT 84121
6455 S 3000 E STE 205, Salt Lake City, UT 84121
3115 Lion Ln, Salt Lake City, UT 84121
(801) 583-3934, (801) 943-5498

Publications

Us Patents

Two Speed Gear Box

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US Patent:
6616567, Sep 9, 2003
Filed:
Oct 10, 2001
Appl. No.:
09/974107
Inventors:
Victor R. Strong - Tulsa OK
Dusan Jan Hvolka - Salt Lake City UT
Assignee:
Terex Corporation - Westport CT
International Classification:
F16H 5708
US Classification:
475331, 475322
Abstract:
A two speed gear box includes a wheel hub that is rotatably supported by a spindle. The two speed gear box further includes an inboard planetary gear assembly and an outboard planetary gear assembly that cooperate to provide four modes of operation for the wheel hub with respect to a drive axle. The four modes of operation include a neutral mode, a braking mode, a high speed mode and a low speed mode. Selective engagement and disengagement of a clutch in the inboard planetary gear assembly, and selective engagement and disengagement of a clutch in the outboard planetary gear assembly provide for selection of one of the modes of operation.

Two Speed Gearbox

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US Patent:
6935986, Aug 30, 2005
Filed:
Aug 30, 2002
Appl. No.:
10/233137
Inventors:
Dusan J. Hvolka - Salt Lake City UT, US
Steve G. Pitts - Coffeyville KS, US
Cary D. Pitts - Coffeyville KS, US
Assignee:
Darwin Industries, Inc. - Coffeyville KS
International Classification:
F16H003/44
US Classification:
475322
Abstract:
A two speed gear box including a casing that is rotatably supported by a central planetary gear carrier. The two speed gear box further includes a central mounted planetary gear assembly with a ring gear controlled by a low speed clutch and a sun gear controlled by a high speed clutch that cooperate to provide three modes of operation for the output shaft with respect to a drive axle. The three modes of operation include a neutral mode, a high speed mode and a low speed mode. Selective engagement and disengagement of the low speed and high speed clutches provide for selection of one of the modes of operation.

Two Speed Gearbox

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US Patent:
7537536, May 26, 2009
Filed:
Aug 26, 2006
Appl. No.:
11/510024
Inventors:
Dusan J. Hvolka - Salt Lake City UT, US
Patrick Hvolka - Salt Lake City UT, US
International Classification:
F16H 31/00
US Classification:
475146, 475319, 475322, 192 352, 192 85 AA
Abstract:
A universal two speed gearbox for driving high speed vehicles under high temperature operating conditions, and other devices which require variable operating two speed bearing thrust.

Loader Linkage

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US Patent:
20050045351, Mar 3, 2005
Filed:
Aug 26, 2003
Appl. No.:
10/648107
Inventors:
David O'Brien - Dubuque IA, US
Gregory Werner - Durango IA, US
Michael Worley - Sandy UT, US
George Robertson - Spanish Fork UT, US
Dusan Hvolka - Salt Lake City UT, US
International Classification:
A01B059/04
US Classification:
172810000
Abstract:
A Z-bar loader linkage having a floating bell crank. A boom is pivotally mounted to a loader frame at one end and an attachment at the other end. The bell crank is pivotally mounted on leveling links extending forwardly from the loader frame. The drive end of the bell crank is provided with an attachment link that extends from the bell crank to the attachment for controlling the angular position of the attachment. A guide link extends between the attachment link and the boom.

Two Speed Planetary Electric Shift Gearbox

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US Patent:
20090247346, Oct 1, 2009
Filed:
Mar 25, 2008
Appl. No.:
12/079107
Inventors:
Dusan J. Hvolka - Salt Lake City UT, US
Patrick Hvolka - Salt Lake City UT, US
Viliam Raffaj - Salt Lake City UT, US
International Classification:
F16H 48/06
US Classification:
475155
Abstract:
A direct drive electric shift two speed planetary gearbox using a linear actuator to engage selectively planet, sun and ring gears to provide a low speed mode, a neutral mode, and a high speed mode of operation with significant fuel efficiencies.

Direct Drive Electric Shift Two Speed Planetary Gearbox

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US Patent:
20100267508, Oct 21, 2010
Filed:
Apr 16, 2009
Appl. No.:
12/386310
Inventors:
Dusan J. Hvolka - Salt Lake City UT, US
Patriek Hvolka - Salt Lake City UT, US
Viliam Raffaj - Salt Lake City UT, US
Assignee:
DJH Engineering Center, Inc. - Salt Lake City UT
International Classification:
F16H 3/44
US Classification:
475149
Abstract:
A direct drive electric shift two speed planetary gearbox using a linear actuator to engage selectively the ring gear either to the housing or to the carrier by means of a synchronizing clutch to provide a low speed mode, a neutral mode, and a high speed mode of operation resulting in significant fuel efficiencies.

Multi-Purpose Articulated Bucket Lift Digging And Hauling Vehicle

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US Patent:
51201828, Jun 9, 1992
Filed:
Sep 4, 1990
Appl. No.:
7/577155
Inventors:
Dusan J. Hvolka - Salt Lake City UT
International Classification:
B60P 104
US Classification:
414487
Abstract:
An articulated U-shaped multi-purpose vehicle particularly adapted for underground digging and hauling comprising: a U-shaped frame having opposing sides and front ends connected by a front piece, and rear ends defining an open interior space in communication with an open front end; a bucket load chamber mounted within the U-shaped frame, a liftable bucket loader hingedly attached to the frame to pivotally tilt the bucket loader bottom as it is rearwardly lifted and transported to empty its contents into the bucket load chamber, wheel mounts capable of pivoting attached to the opposing sides; a plurality of wheels independently suspended and rotatably attached to the wheel mounts; pivots associated with the wheel mounts to pivot and turn each wheel in a desired direction; a motor associated with each wheel to rotate the wheels forward and backward; a power source operably associated with the pivots and motors; and controls mounted to the frame and associated with the engine, pivots, and power source is selectively activate the engine and pivots to align and drive each wheel at the desired speed and direction.

Multi-Purpose Uni-Body Digging Service Vehicle

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US Patent:
51470110, Sep 15, 1992
Filed:
Jul 8, 1991
Appl. No.:
7/726776
Inventors:
Dusan J. Hvolka - Salt Lake City UT
Assignee:
DJH Engineering Center, Inc. - Salt Lake City UT
International Classification:
B60K 17358
US Classification:
180234
Abstract:
A U-shaped multi-purpose uni-body digging service vehicle particularly adapted for transport and hauling comprising: a U-shaped frame having opposing sides and front ends connected by a front piece, and rear ends defining an open interior space in communcation with an open front end; an open top earthmover digging and carrying module structured to fit within and mounted within the interior of the opening of the U-shaped frame to carry loads, wheel mounts capable of pivoting attached to the opposing sides; a plurality of wheels independently suspended and rotatably attached to the wheel mounts; pivot means associated with the wheel mounts to pivot and turn each wheel in a desired direction; independent drive means associated with each wheel to rotate said wheels forward and backward; a power source operably associated with the pivot means and independent drive means; and control means mounted to the frame and associated with the drive means, pivot means, and power source to selectively activate the drive means and pivot means to align and drive each wheel at the desired speed and direction.
Dusan J Hvolka from Salt Lake City, UT, age ~83 Get Report