Unitary Multiple Springs Patents (Class 70/DIG55)
  • Patent number: 4741189
    Abstract: A key guard comprises a key ring having an absent segment. A channel in the guard captures and restrains the ring to circular motion along its arc. A follower carries an interposer which intersects the channel under spring action of a spring means symmetrically positioned with respect to a central axis. The spring means may be a pair of compression springs, or a pair of spring arms acting on the follower. The ring and the key guard may be flat.
    Type: Grant
    Filed: October 1, 1986
    Date of Patent: May 3, 1988
    Inventor: Tibor Battenberg
  • Patent number: 4466540
    Abstract: A package comprises a cover closing an article housing formed in a baseplate. A contiguous compartment closed by a plate contains a spring assembly comprising two arc members joined at their ends and bearing on abutment members. A profiled rod inserted through a complementarily profiled opening pushes on thrust member against the abutment of the ends of the spring assembly on the abutment members so as to bring about, by symmetrical reaction, retraction of the bar supporting the bolt members. However, if a fly-weight has not previously been retracted by a magnetic field a projection engages in a groove in the fly-weight to lock the lock. The consecutive action of the magnetic field and the pressure on thrust member are applied by a key device retained at the checkout of the self-service store. The invention has one particular application in the merchandizing of prerecorded magnetic tape cassettes.
    Type: Grant
    Filed: June 24, 1983
    Date of Patent: August 21, 1984
    Assignee: Plastiques Industriels Thecla
    Inventors: Robert Lotrous, Paul Darbois
  • Patent number: 4324121
    Abstract: A key ring which includes a metal ring with an open segment area for the insertion and removal of keys has the metal ring mounted in a circular guide groove of a handle portion such that the ring is rotatable therein. A latch is slidably disposed in a passage in the handle portion and spring-biased into engagement with the metal ring for locking the metal ring to prevent its rotation.Means are provided for disengaging the latch so as to permit rotation of the metal ring.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: April 13, 1982
    Inventor: Herbert Richter
  • Patent number: 4259856
    Abstract: A pair of combination locks is employed to hold the lid of a luggage case cked closed, with a left-hand lock operating as a mirror image of a right-hand lock. Principal parts of the locks, including improved dial-indexing springs (but not the dials) are interchangeable. The dial-indexing springs cooperate with the dials of left-hand and right-hand locks in the same manner, so that all of the dials have the same action.
    Type: Grant
    Filed: April 3, 1979
    Date of Patent: April 7, 1981
    Assignee: Presto Lock Company, Division of Walter Kidde & Company, Inc.
    Inventor: Rudolf Wingert