Cam And Lever Patents (Class 235/134)
  • Patent number: 9547279
    Abstract: Grand date calendar display device for a watch movement comprising a first disc and a second disc, arranged to display, on certain dates, first date values by combining symbols borne by said first disc and symbols borne by said second disc, and on other dates, second date values by symbols borne only by said second disc. The first disc is a modified units display disc, bearing a first series of symbols comprising a first sequence of at most nine first consecutive units numerals truncated by at least a second units numeral with respect to the complete series of ten units, and the second disc is a modified tens display disc including a second series of symbols for the display of at least the tens of the date, comprising at least one combination of two numerals formed of a tens numeral and a second units numeral.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: January 17, 2017
    Assignee: ETA SA Manufacture Horlogère Suisse
    Inventor: Stefan Rombach
  • Patent number: 7350693
    Abstract: An indexing mechanism comprising a body (10) mounted so as to be rotatble about an axis; means (3) for rotating said body about said axis; first cam means (9, 10) for displacing said body along said axis away from an axial rest position during rotation of said body in a first direction; biassing means (11) for restoring the body to its axial rest position on completion of a rotation or a predetermined portion thereof of the body; means (8a) for detecting the axial movement of the body when it is being restored to its axial rest position; and second cam means (2, 9) permitting said body to be rotated in a second direction opposite the first direction.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: April 1, 2008
    Assignee: Elster Metering Limited
    Inventor: Ronald Gordon Roper
  • Patent number: 5168146
    Abstract: A bi-directional snap-action register mechanism for an odometer-type mechanical register display. The mechanism includes at least one register display wheel and a bi-directional cam mounted coaxially along a common shaft with the register display wheel. The bi-directional cam engages a helical groove formed along the shaft to allow lateral displacement of the bi-directional cam in a direction parallel to a rotational axis of the shaft. A pin is biased by a spring into contact with the bi-directional cam. Rotation of the shaft causes the bi-directional cam to be moved with respect to the pin. The cam abruptly rotates through a predetermined angular distance when the point of contact of the biased pin with the cam moved from a smooth portion to a step transition portion of the cam. The abrupt rotation of the cam is communicated to the register display wheel to cause a new display position to be moved into view.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: December 1, 1992
    Inventors: John D. Marshall, Thierry W. Swinson, Richard L. Bennett, Kenneth L. Cole
  • Patent number: 5026973
    Abstract: A number wheel counter has a worm wheel connected with the least significant number wheel. A worm gear engaged with the worm wheel is mounted for both rotational and translational movement about a spindle. Cam means are provided such that as the worm gear is rotated, it is also displaced bodily by the cam means so that the worm wheel remains unmoved. At the end of a defined travel of the cam means, the worm gear is returned rapidly to a rest position driving the worm wheel in the manner of a rack and pinion. In this way the number wheels are driven intermittently with the time interval during which the number wheels are between discreet number positions being minimized.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: June 25, 1991
    Assignee: ABB Kent plc
    Inventor: David Woodroffe
  • Patent number: 4415801
    Abstract: A printer countwheel mechanism in a time stamp machine keeps a running count of the number of groups of documents stamped by automatically advancing a countwheel to the next highest number when all documents in the group have been stamped. A document group comprises one or more documents. Each document in the group is stamped with the same countwheel number. When stamping single documents, i.e. groups consisting of only one document, the countwheel is advanced every stamping operation so that every document is stamped with a different number. When stamping duplicates, i.e. groups of two documents, the countwheel is advanced every other stamping operation so that duplicates are stamped with the same number. The mechanism may also be disengaged when it is not necessary to keep a count of the number of documents stamped.
    Type: Grant
    Filed: April 8, 1981
    Date of Patent: November 15, 1983
    Assignee: Simplex Time Recorder Co.
    Inventor: George Franke
  • Patent number: 4298791
    Abstract: Apparatus for scanning the relative position of a preselector counter mechanism which includes a plurality of digital discs having radial cams rotated in accordance with the setting of a preselected numerical value on the counter, with each of the radial cams being provided with a scanning arm adapted to initiate a switching operation upon reaching a preselected stage of the counter mechanism, is provided with a plurality of counter wheels each adapted to be set to a pre-selected value with an analogue metering value cam in the shape of an Archimedean spiral being affixed to each of the counter wheels. Each of the counter wheels and the metering value cams is arranged to represent a decade of a decimal system numerical value. Indexing pinions gear each of the counter wheels and the metering value cams with those representing a next adjacent decade.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: November 3, 1981
    Assignee: Kienzle Apparate GmbH
    Inventors: Helmuth Muller, Lother Herrmann
  • Patent number: 4044548
    Abstract: A time clock is provided which includes a minute wheel that is advanced every minute and an hour wheel that must be advanced every hour, wherein a deflecting pawl device is utilized, in place of gears, to connect the wheels. Both wheels have ratchet teeth, and a pawl that oscilltes once each minute to advance the minute wheel. The minute wheel, which rotates once every hour, has a cam that moves beside the pawl to deflect it sidewardly so that the pawl engages a tooth on the hour wheel. Thus, at the next oscillation of the pawl, both wheels are advanced. The minute wheel bears the numbers 0 through 59, while the hour wheel bears the numbers 1 through 12 repeated five times, so that both wheels have 60 numbers.
    Type: Grant
    Filed: March 26, 1976
    Date of Patent: August 30, 1977
    Assignee: New England Business Service, Inc.
    Inventor: Francis W. Rowbottam
  • Patent number: 4022376
    Abstract: A first rotating display means having indicia on its outer periphery, rotates within and in synchronization with a second rotating display means having indicia and a window on its outer periphery, the indicia for the first display means being visible through the window at selected times.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: May 10, 1977
    Assignee: P. R. Mallory & Co., Inc.
    Inventor: Richard H. Weber
  • Patent number: 4009373
    Abstract: A register designed to count and display cost on a gasoline dispensing pump. The register has a 100 cent wheel which is driven by a stepping motor. As the 100 cent wheel rotates it biases a spring which, after the 100 cent wheel has completed a revolution, incrementally drives a dollar register wheel. Likewise, as the dollar wheel rotates it biases a spring which, after the dollar wheel has completed a revolution, incrementally drives a 10 dollar register wheel. The energy stored in the springs is also utilized to reset the register to zero, such that all of the power utilized to both drive and reset the register is supplied by the stepping motor.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: February 22, 1977
    Assignee: Suntech, Inc.
    Inventor: Einar T. Young
  • Patent number: 3931705
    Abstract: The present invention relates to a counter feed mechanism as used in digital clock comprising a cam member adapted for advanced rotation and another cam member adapted for delayed rotation both arranged on a common axis so that the advanced rotation of the first-mentioned cam member under a drive force transmitted from a clock mechanism twists a coil spring stretched between both cam members, which is, in turn, charged with energy for rotation of the second-mentioned cam member and, upon rotary displacement of the first-mentioned cam member by a predetermined angle, said second cam member is released to be rotated at once so as to advance a rotary wheel step by step.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: January 13, 1976
    Assignee: Jeco Kabushiki Kaisha
    Inventors: Koichi Iwaki, Atsushi Wakabayashi, Yukihiro Nagahori, Shiro Nakagawa