PrairieTek was a

hard drive A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating hard disk drive platter, pla ...

manufacturer located in

Longmont, Colorado Longmont is a home rule municipality located in Boulder and Weld counties, Colorado, United States. Its population was 98,885 . Longmont is located northeast of the county seat of Boulder. It is named after Longs Peak, a prominent mountain th ...

in the late 1980s and early 1990s. It was founded by Terry Johnson in 1985. It manufactured 5 and 10

megabyte The megabyte is a multiple of the unit byte for digital information. Its recommended unit symbol is MB. The unit prefix ''mega'' is a multiplier of (106) in the International System of Units (SI). Therefore, one megabyte is one million bytes ...

ruggedized A rugged computer or ruggedized computer is a computer specifically designed to operate reliably in harsh usage environments and conditions, such as strong vibrations, extreme temperatures and wet or dusty conditions. They are designed from incepti ...

" miniature hard drives for the laptop computer market. Its PrairieTek 220 was the first hard drive, a potentially profitable move, but by the time the drive entered into mass production, its storage capacity was already low for the market. "PrairieTek's single disk 40MB model, potentially a cost-effective competitive product, was...late to market." Unlike many manufacturers of the time, PrairieTek did not rest the drive heads on the disks, but instead used reverse EMF (ElectroMagnetic Force) to park the drives on a spreader bar. At the time all manufacturers parked heads on the platters in an out of the way place. When the platters spun up, with the increasingly smooth surface of the platter, the heads had a tendency to stick to the surface (sticktion) which resulted in ripping them off the arms. This dynamic loading of the heads avoided the problem and was a carry over from a previous design used in 8 inch removable drives. The company first went into the black in September 1990, at which point co-founder Steve Volk and the core group of engineers resigned to found

Intégral Peripherals Intégral Peripherals, Inc., or simply Intégral, was an American computer hardware company based in Boulder, Colorado, and active from 1990 to 1998. It was the first company to manufacture hard disk drives with a platter diameter of 1.8 in ...

, to develop 1.8" drives. The company failed within a year of Volk leaving. The first round of layoffs started in February 1991, all production activity ceased at the end of June - and the company filed for

Chapter 11 bankruptcy Chapter 11 of the United States Bankruptcy Code ( Title 11 of the United States Code) permits reorganization under the bankruptcy laws of the United States. Such reorganization, known as Chapter 11 bankruptcy, is available to every business, w ...

in September 1991. The bidding war for PrairieTek's patent portfolio in 1992 rose to the then astounding price of $18M, paid by

Conner Peripherals Conner Peripherals, Inc. (commonly referred to as Conner), was a company that manufactured hard drives for personal computers. Conner Peripherals was founded in 1985 by Seagate Technology co-founder and San Jose State University alumnus Finis Conn ...

and

Alps Electric , previously known as is a Japanese multinational corporation, headquartered in Tokyo, Japan, producing electronic devices, including switches, potentiometers, sensors, encoders and touchpads. The company was established in 1948 as Kataoka El ...

- PrairieTek's patent #4,933,785 in particular was sought after."RAND March 2005 Market Value and Patent Citations"
Retrieved October 25, 2018

References

{{compu-company-stub 1985 establishments in Colorado 1991 disestablishments in Colorado American companies established in 1985 American companies disestablished in 1991 Companies that filed for Chapter 11 bankruptcy in 1991 Computer companies established in 1985 Computer companies disestablished in 1991 Computer storage companies Defunct companies based in Colorado Defunct computer companies of the United States Defunct computer hardware companies Electronics companies established in 1985 Electronics companies disestablished in 1991 Technology companies established in 1985 Technology companies disestablished in 1991