Patents Represented by Attorney, Agent or Law Firm Laurence R. Letson
  • Patent number: 4931606
    Abstract: A switch activator is described which is a unitary molded plastic molded coil spring and a pivot plate which pivots to act on a membrane switch when the coil spring buckles under load. The buckling of the spring is controlled by the relative placement of the axis of the spring and a pivot surface around which the top portion of the spring pivots as the spring buckles. The cross section of the spring member is limited in size so as to prevent the forming of a solid column upon compression, while at the same time accommodating the needs for molten plastic flow in the spring during molding.
    Type: Grant
    Filed: April 28, 1989
    Date of Patent: June 5, 1990
    Assignee: International Business Machines Corporation
    Inventor: David A. Bruner
  • Patent number: 4920237
    Abstract: A membrane keyboard has two spaced flexible membranes (1 and 2) carrying contact pad assemblies. Acoustic pads (15) of expanding ink are printed on the top surface of the upper membrane (2) between the contact pads (4) and the key buttons used to operate the contact switches formed by the pairs of opposed contact pads, thus reducing the acoustic noise and improving the contact bounce characteristic.Optionally, printed expanding ink is also used to form the spacer (5) between the membranes (1 and 2).
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: April 24, 1990
    Assignee: International Business Machines Corporation
    Inventors: Richard A. Eardley, Brian J. Keenan, Ian A. Lawson, John McAllister
  • Patent number: 4889439
    Abstract: The invention automatically divides the text at the end of the page in such a way that widow lines and orphan lines of text do not exist. The typewriter shifts the effective page end point to shift the orphan line of text to the next page of text or delays the page ending to accommodate the widow line on the present page rather than forcing the line to the top of the next page. The text is not altered in the memory of the typewriter and no stop codes or page end codes are inserted in the text memory, thereby eliminating revision problems with the paginated text.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: December 26, 1989
    Assignee: International Business Machines Corporation
    Inventors: Sherry A. Cook, Patrick J. Gerstle, David R. Smith, Kathryn R. Stilz
  • Patent number: 4799811
    Abstract: A typewriter is disclosed which is capable of storing text in a memory and playing out the stored text on command. When the print point is moved back into the printed text for any reason, the typewriter will automatically return the print point to the same position it occupied prior to being moved back into the text, prior to the resumption of printing.
    Type: Grant
    Filed: June 20, 1986
    Date of Patent: January 24, 1989
    Assignee: International Business Machines Corporation
    Inventors: James L. Beck, Marguerite H. Doyle, Roger W. Early, Terrance W. Ringle, David R. Smith
  • Patent number: 4790672
    Abstract: A pressed sleeve bearing is disclosed which is moldable out of plastic and which will provide a superior retaining characteristic, while at the same time will retain the designed interior diameter of the bearing, unaffected from the pressing forces and deformation. The region of engagement between the bearing and the supporting part is displaced axially from the bearing region so that any deformation of the sleeve will not be communicated to the bearing surface. The interior of the sleeve in the region of engagement is relieved to provide clearance for the shaft that will be inserted into the bearing.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: December 13, 1988
    Assignee: International Business Machines Corporation
    Inventor: Steven R. Komplin
  • Patent number: 4789257
    Abstract: A function for an electronic typewriter is described which allows the operator of the typewriter to realign the print element of the typewriter to the prior adjacent, or the following adjacent line which contains textual material, even when the present position of the print element is other than a uniform line feed increment or multiple thereof, from the designated destination line. The electronic controls of the typewriter determine the present position of the print element and the vertical location of the line to which the print element is to move, and determines the distance and moves the record sheet to position the print element precisely over the designated line of text.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: December 6, 1988
    Assignee: International Business Machines Corporation
    Inventors: John K. Brown, III, Darell D. Cronch, Patricia A. Graham, Kevin N. Tucker
  • Patent number: 4778394
    Abstract: The cartridge disclosed is provided with an extractor means which is instrumental in the removal of the cartridge from the machine, by providing a smooth camming action to move the cartridge away from the machine circuit board. The extractor allows the cartridge to protrude only a small amount outside the machine housing and still be removed such that the cartridge is not rocked or moved to and fro relative to the machine circuit board.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: October 18, 1988
    Assignee: International Business Machines Corporation
    Inventor: John F. Smith
  • Patent number: 4734965
    Abstract: A device for automated manufacture of wiring harness is described. The device feeds the wires through a number of channels in a die to position the wires at the proper termination points and then terminates the wires in connectors. The wiring harness assembly device permits the automated assembly of wiring harnesses which have wires which interconnect the connectors at positions which do not positionally correspond.
    Type: Grant
    Filed: December 19, 1986
    Date of Patent: April 5, 1988
    Assignee: International Business Machines Corporation
    Inventor: John O. Schaefer
  • Patent number: 4689768
    Abstract: Spelling errors are detected through the comparison of the keyed word with previously stored words of known spelling. The operator is immediately alerted upon the detection of a lack of comparison between the keyed word and the words available in the storage for operator consideration. When the operator is notified through an alerting device of a "no match", the operator may then modify the spelling of the word if it is incorrect or accept the word if it is correct but not found in the dictionary storage. Words previously not located in the dictionary storage are then stored in a random access memory for subsequent use and the word most recently verified as correct and stored in the random access memory may be maintained at the top of a stack while the most infrequently used words will eventually be removed from the random access memory as the memory fills and overflows.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: August 25, 1987
    Assignee: International Business Machines Corporation
    Inventors: Roderick S. Heard, Joseph C. Tremoulet
  • Patent number: 4670842
    Abstract: For effecting the automatic selection of Arabic character forms for display/printing of Arabic script, the structure of Arabic words is defined in terms of the respective shapes of the characters, and then production rules are derived to logically effect selection of an appropriate variant shape for any given character. By the disclosed teaching, a method and system are defined capable of handling not only the usual text, but also initials, acronyms, vowels, compound shapes, special end-of-word and stand-alone shapes.
    Type: Grant
    Filed: May 10, 1984
    Date of Patent: June 2, 1987
    Assignee: International Business Machines Corporation
    Inventor: Mohamed F. Metwaly
  • Patent number: 4616945
    Abstract: A cartridge 12 for correction tape 22 is disclosed which utilizes a cam follower 40 operated pawl 50/ratchet 52 for feeding of the tape 22, where the pawl 50 is operated as a result of the movement of a cam follower 40 against a cam 40 on the support frame 10. As the cartridge 12 oscillates, the pawl 50 is displaced to increment the ratchet 52 to effect feed.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: October 14, 1986
    Assignee: International Business Machines Corporation
    Inventor: Steven R. Komplin
  • Patent number: 4616218
    Abstract: A CRT data display comprises a display head of significant weight which may be moved vertically with the aid of constant force springs and which may be tilted to adjust the position of the CRT for operator comfort. The display may be rotated about a vertical axis to permit multiple viewing positions.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: October 7, 1986
    Assignee: International Business Machines Corporation
    Inventors: Edward L. Bailey, Raymond L. Cimijotti, Levern H. Lowrie
  • Patent number: 4606662
    Abstract: A single stepping motor 10 driven to effect ribbon feed, ribbon lift, correction tape feed, correction tape lift is disclosed. The stepping motor 10 controls a cam 60/follower 64 pair to effect lift through a connection link 54 to a depending coupling 56 on the ribbon cartridge 22. The link 54 provides accurate positioning of the ribbon cartridge 22 without regard to the cam position and further transmits ribbon feed motion through to the depending coupling to the ribbon driver 30. Correction tape feed is effected through link 54 controlling the oscillation of the cartridges 22, 24 relative to a tape feed cam member 44.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: August 19, 1986
    Assignee: International Business Machines Corporation
    Inventor: Steven R. Komplin
  • Patent number: 4605828
    Abstract: A multilayer membrane switch structure is disclosed wherein the flexible membrane is fixedly attached to a support frame member by a pattern of adhesive regions, the regions positioned in locations corresponding to the switch locations of the structure. The adhesive engagement of the bottom surface of the membrane structure stabilizes the bottom electrical contact and, at the same time, leaves open regions between the adhesive regions which will accommodate air which is exhausted from the switch cavity through a hole formed in the bottom layer of the multilayered switch structure into communication with the open regions between the adhesive regions. Thus, the open regions act to exhaust the air in a switch cavity when the switch is activated.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: August 12, 1986
    Assignee: International Business Machines Corporation
    Inventors: Dominic A. Gostomski, Jr., Jerry G. Price
  • Patent number: 4592670
    Abstract: A paper feed release system is disclosed wherein a camming member is mounted on and acts with respect to the platen shaft to depress a paper feed release bar extending entirely across the paper feed mechanism such that only one end of said bar is depressed while the second end provides a pivot with respect to the frame supporting the paper feed mechanism. The paper feed rolls and shafts are supported on support plates which are engaged by the paper feed release bar and are caused to be depressed by the pivoting movement of the paper feed release bar with respect to the frame member, under the influence of the camming release member.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: June 3, 1986
    Assignee: International Business Machines Corporation
    Inventors: Edgar H. Frank, Steven R. Komplin
  • Patent number: D284672
    Type: Grant
    Filed: November 28, 1984
    Date of Patent: July 15, 1986
    Assignee: International Business Machines Corporation
    Inventor: Peter J. Mendel
  • Patent number: D284673
    Type: Grant
    Filed: October 3, 1984
    Date of Patent: July 15, 1986
    Assignee: International Business Machines Corporation
    Inventor: James P. Wang
  • Patent number: D286638
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: November 11, 1986
    Assignee: International Business Machines Corporation
    Inventors: Peter J. Mendel, James P. Wang
  • Patent number: D290133
    Type: Grant
    Filed: September 6, 1985
    Date of Patent: June 2, 1987
    Assignee: International Business Machines Corporation
    Inventor: Peter J. Mendel
  • Patent number: D291093
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: July 28, 1987
    Assignee: International Business Machines Corporation
    Inventor: James P. Wang