Abstract: An articulated support assembly for a computer keyboard. The assembly includes a generally U shaped rigid support member, and a platform for supporting the keyboard pivotably mounted on a central portion of the support member. Projecting end portions of the support member are pivotably mounted on attachment members fixed to the bottom of a table or desk top. A releasable friction clutch restricts pivotal movement of the platform around the central portion of the support member. A releasable ratchet assembly prevents revolving movement of the central portion toward a lowered position relative to the attachment members. A switching mechanism can be manually activated to release the ratchet assemblies and the friction clutch so that the position and orientation of the platform relative to the table or desk top can be adjusted.
Type:
Grant
Filed:
January 17, 1996
Date of Patent:
October 20, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Kenneth J. Kirchhoff, Robert J. Wolf, James J. Frater, Manfred W. Suhr, Lawrence J. Fenske
Abstract: Composite pressure sensitive adhesive microspheres are provided comprising two or more water insoluble polymers that are mixed wholly within the boundaries of polymeric microspheres. The range of monomers and polymers are chosen to tailor the properties of the composite pressure sensitive adhesive microspheres for specific performance and/or application requirements. Any polymer that can be dissolved into a solvent monomer or mixture of solvent monomers can be used to prepare the composite pressure sensitive adhesive microspheres. Pressure sensitive adhesive microspheres according to this invention can be prepared using free radical suspension polymerization.
Type:
Grant
Filed:
June 3, 1996
Date of Patent:
October 20, 1998
Assignee:
Minnesota Mining And Manufacturing Company
Inventors:
Michael R. Kesti, James E. Garbe, Joaquin Delgado, Spencer F. Silver, Richard J. Goetz
Abstract: A tape that includes an electronically conductive flexible substrate, a release layer, and an adhesive comprising an ion-intercalating material, and electrochromic devices and glazing units prepared using this tape.
Type:
Grant
Filed:
April 24, 1996
Date of Patent:
October 20, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Silvia L. Bommarito, Kejian Chen, Peter F. Cullen, L. Charles Hardy, Paul S. Lugg
Abstract: Highly efficient diffusely reflecting multilayer mirrors diffusely reflect light incident upon them. Highly efficient diffusely reflecting multilayer polarizers diffusely reflect light of one polarization while diffusely transmitting the other polarization. The diffusely reflecting mirror includes a light diffusing element and a multilayer mirror element. The diffusely reflecting polarizer includes a light diffusing element and a multilayer reflective polarizing element.
Type:
Grant
Filed:
September 10, 1997
Date of Patent:
October 20, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Sanford Cobb, Jr., Brian D. Cull, Andrew J. Ouderkirk, Michael F. Weber, David L. Wortman
Abstract: An ear tip having a central portion and two end portions is described. The end portions each have ear contacting surfaces that are sized and shaped to contact the ear of the user. The ear tips are easily cleaned. The ear tips also contribute to user comfort and convenience.
Type:
Grant
Filed:
September 3, 1997
Date of Patent:
October 20, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A silica-based water-spreading coating having surfaces of silica particles coated with a metal oxide. The metal comprises aluminum, gallium, germanium, tin, indium, arsenic, antimony or vanadium. The water-spreading coating may be applied to a retroreflective sheeting on a traffic sign.
Type:
Grant
Filed:
November 9, 1995
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: The present invention implements, in a data processing environment, many of the attributes of paper Post-it.RTM. notes. The note program of the present invention need not be resident in an application program, and the notes of the present invention may be moved directly between windows or between regions without being saved in an intermediate memory, may be easily dispensed either from a note dispenser of a window or on a desktop, may overlap the boundary of a window, may be automatically saved, may be attached to a document within a window so that the note moves with the document, may overlap a boundary of a window, may be resized with the constraint that the note may not be resized off of a window, may be moved across a window boundary, and may be attached to an object, such as a character, a word, a sentence, or paragraph of a document.
Type:
Grant
Filed:
December 1, 1995
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
David T. Berquist, Peter M. Eisenberg, Mitchell B. Grunes, Martin A. Kenner, John M. Kruse, Timothy A. Mertens, Cindy L. Munson
Abstract: A method and apparatus are provided for using certain hydrofluoroethers (HFEs) as low temperature heat transfer media in secondary loop refrigeration systems. These materials exhibit a low, somewhat linear Temperature Difference Factor over the temperature range of -15.degree. C. to -65.degree. C., making them ideal for use as low temperature heat transfer media. The HFEs of the present invention are nonflammable, nontoxic, environmentally benign, and have a high heat transfer capacity and low viscosity over the required operating temperatures. Furthermore, since these materials have high boiling points and low freezing points, they are not prone to phase changes over the required operating temperatures, and do not require pressurized systems.
Type:
Grant
Filed:
October 1, 1997
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: A compact electronic projector has a display assembly, such as a liquid crystal display panel and associated Fresnel lenses, which is mounted inside the projector body so as to rotate between a storage position in which the display assembly is generally parallel with the projection axis of the device, and a deployed position in which the display assembly is disposed at an oblique angle (such as 90.degree.) with respect to the projection axis. The assembly can thus be rotated to occupy the voids needed for expansion and contraction of the optical beams when the projector is in use, which voids have no useful function when the projector is not in use, and are thus available for component storage. This feature enables saving of a substantial volume of space, making the closed unit compact and easily transported.
Type:
Grant
Filed:
January 22, 1997
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Ernesto Melquades Rodriguez, William Edward Haushalter
Abstract: The present invention comprises a metal complex capable of being dispersed in or alternatively, formed in a water-absorbing article having one or more metal ions situated within a sponge, at least one chelating polymer chelated to the transition metal ion and at least one potentiator chelated to the transition metal ion.
Type:
Grant
Filed:
June 7, 1996
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An anti-reflective film construction contains an optically transparent polymeric film having a textured surface and an optically transparent adhesive, the film construction configured to exhibit light transmission of greater than about 70 percent and 60.degree. gloss measurement of between about 15 and 100. Methods of producing such film constructions and methods of reducing reflection from a surface are also described.
Type:
Grant
Filed:
May 6, 1996
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Kristin M. Schroeder, Brian L. Koster, Timothy T. Magill, Kenneth G. Olson, Takashi Harada
Abstract: A retroreflective sheeting have a multitude of retroreflective elements that include a layer of optical elements and a reflective element(s) that is positioned functionally behind the optical elements. The retroreflective elements are supported by a polymeric layer, and an adhesive layer positioned below the support layer. The adhesive layer contains a polyurethane crosslinked by at least an isocyanate compound. The polyurethane is polymerized from a component containing a polyol having at least one alkyl side chain in a molecule, and the adhesive has (i) a storage modulus of about 2.times.10.sup.7 to 8.times.10.sup.7 dyne per square centimeter when measured in a tensile mode at a frequency of 35 Hz and 25.degree. C., and (ii) a softening point of about 80.degree. C. to less than 200.degree. C.
Type:
Grant
Filed:
December 30, 1996
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: An assembly useful for retaining optical components such as lenses, optical filters and the like includes a block having a cavity and a pair of retainers received in the cavity. In certain embodiments, the cavity is cylindrical and each retainer has a semi-cylindrical configuration. Each retainer preferably includes integrally molded deformable ribs that shift the optical components when the retainers are closed to a position such that the optical axis of each component is collinear with the central axis of the optical chamber and the retainer cavity.
Type:
Grant
Filed:
February 27, 1997
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining & Manufacturing Co.
Inventors:
Nagel A. Abul-Haj, Roxanne E. Abul-Haj, Thomas G. Hacker
Abstract: A face mask (10) covers the nose and mouth of the wearer and includes a band (24) to retain the mask member (12) in position. The band attaches at the sides (20) of the mask and extends around the ears of the wearer and loops through orifices (32). The band (24) extends around the back of the neck and provides for retaining the mask (10) at the front of the wearer when not worn. Ends (26) of the band (24) are elastic to provide a snug fit for the mask (10).
Type:
Grant
Filed:
January 3, 1997
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
James F. Dyrud, Cynthia Y. Tamaki, Isao Kuniya
Abstract: The present invention provides improved cube corner retroreflective articles which exhibit a wide range of retroreflective entrance angularity in at least one plane, and preferably in two or more planes. An article in accordance with the present invention includes a structured surface having at least one array of cube corner elements formed by three intersecting sets of substantially parallel grooves. Each cube corner element includes a base triangle bonded by one groove from each of the three intersecting groove sets, the base triangle being scalene.
Type:
Grant
Filed:
June 6, 1996
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Abstract: The present invention provides a method of forming an abrasive article comprising the steps of providing an embossed carrier web having a plurality of recesses formed in the front surface thereof; filling the recesses with an abrasive composite slurry that includes a plurality of abrasive grains dispersed in a hardenable binder precursor, hardening the binder precursor to form individual abrasive composite members, laminating a backing sheet to the front surface of the embossed carrier web. The resulting article includes a plurality of precisely spaced abrasive composite members, positioned in a predetermined pattern and orientation on a backing sheet.
Type:
Grant
Filed:
May 19, 1997
Date of Patent:
October 13, 1998
Assignee:
Minnesota Mining & Manufacturing Company
Abstract: A composition of matter suitable for use in a reversible thermometer is disclosed which comprises a thermally responsive material capable of being supercooled at least for several minutes, and subject to a change in state from a solid to a liquid substantially at a predetermined temperature; means for visually observing the change in state; and a matrix forming material comprising an amorphous organic compound, the matrix forming material being insoluble in the thermally responsive material; whereby the thermally responsive material is dispersed within the matrix forming material, the composition of matter being reversibly responsive to changes in temperature, and remaining in the liquid state for a time sufficient to permit a user of the composition to observe the change in state. The preferred matrix forming material is polyisobutylene, and the preferred thermally responsive material is a solid solution of ortho-chloronitrobenzene and ortho-bromonitrobenzene.
Type:
Grant
Filed:
April 26, 1995
Date of Patent:
October 6, 1998
Assignee:
Minnesota Mining And Manufacturing Company
Abstract: Compositions containing conductivity enhancers, which are capable of being coated onto a substrate by means of electrostatic assistance. The compositions comprise one or more free-radically curable monomer(s), and one or more non-volatile conductivity enhancer(s), having cationic and anionic portions, which are soluble in the monomer(s) and which do not interfere with free-radical polymerization, wherein said anionic portion is a non-coordinating organophilic carbon-containing anion. The compositions may further comprise one or more initiator(s), one or more dissociation enhancing agent(s), cross-linking agent(s), cationically polymerizable monomer(s), cationic initiator(s), leveling agents, oligomer(s) or polymer(s), preferably co-reactive, and other additives or adjuvants to impart specific properties to the cured coating.
Type:
Grant
Filed:
March 26, 1996
Date of Patent:
October 6, 1998
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
Albert I. Everaerts, William M. Lamanna, Albert E. Seaver, George V. Tiers