Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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US Patent 5530604 - Electrical connection and slider-suspension assembly having an improved electrical connection
US Patent Issued on June 25, 1996
Estimated Patent Expiration Date:
May 19, 2014Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
May 19, 2014Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA method for the fabrication of a data recording disk file slider-suspension assembly, the slider being of the type having an air bearing surface, a back side opposite the air bearing surface and a trailing edge having a read or write transducer formed as a thin film thereon with electrical leads formed solely on the trailing edge and terminating adjacent the slider back side at termination pads, and a suspension having etched conductive lead structures and conductive contact pads connected to the lead structures. The method comprising the steps of forming a solder bump on each of the termination pads and each of the contact pads, wherein one or more solder bumps are selectively flattened, mechanically attaching the back side of the slider to the suspension such that the termination pads are properly aligned with the contact pads, and heating the solder bumps so as to reflow the termination pad and contact pad bumps such that they electrically connect, wherein a selectively flattened bump extends along an axis defined by a point on one pad and a point on another pad when heated to make contact with another bump.Other References
| InventorApplicationNo. 246052 filed on 05/19/1994US Classes:360/234.5Electrical attachment of slider/headField of Search360/97.01, Disk record360/97.02Environmental control (e.g., air filter, temperature control)ExaminersPrimary: Heinz, A. J.Attorney, Agent or FirmUS Patent References4752027, Method and apparatus for solder bumping of printed circuit boardsIssued on: 06/21/1988 Inventor: Gschwend4761699, Slider-suspension assembly and method for attaching a slider to a suspension in a data recording disk file Issued on: 08/02/1988 Inventor: Ainslie , et al.5167361, Method and apparatus for two sided solder cladded surface mounted printed circuit boards Issued on: 12/01/1992 Inventor: Liebman, et al.5415944Solder clad substrate Issued on: 05/16/1995 Inventor: Kazem-Goudarzi, et al. Foreign Patent References
International ClassG11B 005/48 |
