Key Insertion Guides Patents (Class 70/454)
  • Patent number: 4671090
    Abstract: A cylinder lock includes a rotor rotatably mounted in a bore of a stationary casing. A key passage in the rotor is blocked by a biased shutter which is caused to pivot against the action of a spring when a key is introduced into the key passage. The rotor includes a plurality of separated, spring-urged tumblers which engage with the key in the key passage. A soft-elastic wiper for removing water from the key is positioned in a lateral slot between the entrance of the key passage and a first tumbler. Flaps of the wiper form a normally closed slit which is openable by the force of the key when the key is advanced towards an operational position.
    Type: Grant
    Filed: October 15, 1985
    Date of Patent: June 9, 1987
    Assignee: Kokusan Kinzoku Kogyo Kabushiki Kaisha
    Inventors: Mikio Masaki, Toshikazu Kobayashi
  • Patent number: 4638652
    Abstract: A sealing cap is provided for a lock having a key receiving passage therein. The sealing cap comprises a sealing member which overlies the passage. The sealing member has a first slit therein extending from the outer surface of the sealing member to about the midline thereof at a first oblique angle. A second slit extends from the midline of the member to the inner surface of the member at a second oblique angle. The size of the slits, position of the openings at the ends of the slits and the midline, and the flexibility of the walls of the slits with respect to each other are adapted to seal the passage and permit the insertion of a key through the slits into the passage. The sealing member is sealingly mounted on the lock for rotation in unison with the key. Optionally, a key skirt is also provided which sealingly fits on the key and sealingly mates with the outer surface of the sealing member while the key is in the slit and the key receiving passage.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: January 27, 1987
    Assignee: Nena Morse
    Inventors: Milton Morse, John Morris
  • Patent number: 4549076
    Abstract: Guide arrangement for assuring predetermined orientation for electronic key relative to an electrical receptacle into which it is to be inserted.
    Type: Grant
    Filed: March 24, 1983
    Date of Patent: October 22, 1985
    Assignee: Datakey, Inc.
    Inventor: William P. Flies
  • Patent number: 4539829
    Abstract: A cylinder lock which comprises a housing and, rotatably accommodated therein, a cylinder having an axially extending key slot for reception of, and rotation by, a mating key to unlock the lock. The cylinder is provided on at least one of its ends with an end plate having a similar key slot cut therethrough and means for removably attaching the end plate to the cylinder with the key slot of the end plate in register with the key slot of the cylinder to permit insertion, through the end plate, into the cylinder, of the key, whereby in case of a broken key, the end plate can be removed from the cylinder, thereby exposing a portion of the broken key, facilitating extraction thereof.
    Type: Grant
    Filed: March 22, 1983
    Date of Patent: September 10, 1985
    Assignees: Micha Altmann, Yoel Ben-Yehuda
    Inventor: Benny Givol
  • Patent number: 4440008
    Abstract: A tumbler lock having an outer cylinder and an inner cylinder rotatably mounted therein with springless plate-shaped tumblers which move freely in guide slots. Tumbler locks of known construction can be opened by unauthorized persons because an object can be inserted through the windows in the plate-shaped tumblers required for the insertion of the key, wedged against the side faces of the windows and the tumblers lifted from their locked state. This is foreclosed in the invention because the side flanks of the windows in the area of the key guide which are parallel to the direction of the motion of the tumblers are covered by protective strips connected with the inner cylinder.
    Type: Grant
    Filed: February 17, 1982
    Date of Patent: April 3, 1984
    Inventor: Edmond Uher
  • Patent number: 4295350
    Abstract: A keyhole sighting device for mounting on a key receiving member at a kehole therein. A shell projects forward from the key receiving member and has a funnel-like interior cavity converging toward and terminating in a key receiving opening for mechanically guiding a key to a keyhole within said key receiving opening. The shell is of elastomeric, light emitting material and is fixed to the key receiving member as by a rearwardly extending elastomeric skirt or rearward facing adhesive layer. A modification employs a light reflecting (e.g. white or light colored) material surface rather than a light emitting material to enhance visibility in the dark.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: October 20, 1981
    Inventor: Kim D. Grinage
  • Patent number: 4104898
    Abstract: The safety device comprises a rotatable lock-operating rotor having a first key slot extending transversely thereof, a non-rotatable inner cylindrical body adapted for fixed securement to a door or the like, and a hollow cylinder embracing the rotor and the cylindrical body and having its inner end fixedly secured to the cylindrical body or member. Key-operable pins, plungers or pistons interconnect the rotor and the fixed cylindrical body to prevent rotation of the rotor. The rotor is formed with a first key slot extending transversely thereof and the hollow cylinder has a closed outer end formed with a second key slot extending transversely thereof. A rotatable diaphragm member is interposed between the fixed outer end of the hollow cylinder and the rotor, and has a third key slot extending transversely thereof. The rotor may be disconnected from the fixed cylindrical member by a key inserted into the first slot to engage the pins, plungers or pistons.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: August 8, 1978
    Inventor: Battista Fois