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US 6,209,368 B1Granted
Combination lock
OwnerChin Tsun Leeinventor
Life of this patent
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Abstract
A combination lock includes a male lock body including a rod a female lock body. The female lock body includes a column having a longitudinal slit for releasably receiving the rod of the male lock body. A number of resilient sleeves mounted are around the column. Each sleeve includes a central hole through which the rod extends. Each sleeve includes a bulge on an outer periphery thereof. A number of number wheels are mounted around the column. Each number wheel receives an associated sleeve therein. The bulge of each sleeve generates a sound when the associated number wheel is rotated.
Claims6
A combination lock comprising:
- a male lock body (1) including a rod (11) with a plurality of longitudinally spaced teeth (12) formed thereon;
- and
- a female lock body (2) including:
- a column (21) having a longitudinal slit (212) for releasably receiving the rod (11) of the male lock body (1), the column (21) including a plurality of pairs of protrusions (215) on two lateral sides thereof,
- a plurality of sleeves (23) mounted around the column (21), each said sleeve (23) including a central hole (231) with a notched section (2311) through which the rod (11) of the male lock body (1) extends, a periphery defining the central hole (231) of each said sleeve (23) including a pair of grooves (235) for releasably engaging with one of the pairs of protrusions (215) of the column (21),
- a plurality of retainer plates (24) mounted around the column (21), each said retainer plate (24) including a central hole (241) with a notched section (2411) through which the rod (11) of the male lock body (1) extends, a periphery defining the central hole (241) of each said retainer plate (24) including a pair of grooves (243) for releasably engaging with one of the pairs of protrusions (215) of the column (21),
- a plurality of number wheels (25) mounted around the column (21), each said retainer plate (24) being releasably engaged with an associated said number wheel (25) to rotate therewith,
- an elastic element (22) mounted around an end of the column (21) for biasing each said retainer plate (24) to engage with the associated number wheel (25) to rotate therewith;
- and
- means for actuating each said retainer plate (24) to disengage from the associated number wheel (25) for allowing a change in unlocking code for the combination lock, the actuating means being operable only when the combination lock is in an unlocked status in which the grooves (243) of each said retainer plate (24) align with the protrusions (215) of the column (21).
7 more elements
A combination lock comprising:
- a male lock body (1) including a rod (11) with a plurality of longitudinally spaced teeth (12) formed thereon;
- and
- a female lock body (2) including:
- a column (21) having a longitudinal slit (212) for releasably receiving the rod (11) of the male lock body (1), the column (21) including an engaging section (213), the column (21) having formed on opposing lateral sides thereof a plurality of longitudinally spaced protrusions (215),
- a plurality of resilient sleeves (23) mounted around the column (21), each said sleeve (23) including a central hole (231) through which the rod (11) of the male lock body (1) extends,
- a plurality of retainer plates (24) mounted around the column (21), each said retainer plate (24) including a central hole (241) through which the rod (11) of the male lock body (1) extends,
- a plurality of number wheels (25) mounted around the column (21), each said retainer plate (24) being releasably engaged with an associated said number wheel (25) to rotate therewith,
- an elastic element (22) mounted around an end of the column (21) for biasing each said retainer plate (24) to engage with the associated number wheel (25) to rotate therewith;
- an actuating ring (26) mounted around the column (21) and including a central hole (261) with a notched section (2611) through which the rod (11) of the male lock body (1) extends, a periphery defining the central hole (261) of the actuating ring (26) including a recessed section (262) for engaging with the engaging section (213) of the column (21) to thereby prevent rotation of the actuating ring (26), the actuating ring (26) further including a push section (263) on a side thereof, the push section (263) bearing against an adjacent said retainer plate (24), the actuating ring (26) further including a projection (264) formed on the other side thereof, and
- a turn cap (27) rotatably mounted around the column (21), the turn cap (27) including a central hole (271) with a notched section (2711) through which the rod (11) of the male lock body (1) extends, a periphery defining the central hole (271) of the turn cap (27) including an inclined slide groove (272) having two recessed ends (273 and 274) for releasably engaging with the projection (264) of the actuating ring (26), thereby retaining the actuating ring (26) in place, the projection (264) of the actuating ring (26) being slidable along the inclined slide groove (272) upon rotation of the turn cap (27) such that the actuating ring (26) moves longitudinally to actuate the retainer plates (24) to disengage from the number wheels (25), thereby allowing change in unlocking code of the combination lock.
7 more elements
A combination lock comprising:
- a male lock body (1) including a rod (11) with a plurality of longitudinally spaced teeth (12) formed thereon;
- and
- a female lock body (2) including:
- a column (21) having a longitudinal slit (212) for releasably receiving the rod (11) of the male lock body (1), the column (21) further including an engaging section (213),
- a plurality of resilient sleeves (23) mounted around the column (21), each said sleeve (23) including a central hole (231) through which the rod (11) of the male lock body (1) extends, a periphery defining the central hole (231) of one of said sleeves (23) including a recessed section (232) protruding axially from an outer periphery thereof, the recessed section (232) coaxially encircling the engaging section (213) of the column (21), said outer periphery of each said sleeve (23) defining at least one radially protruding bulge (233), and
- a plurality of number wheels (25) mounted around the column (21), each said number wheel (25) receiving an associated said sleeve (23) therein,
- whereby the engagement of the bulge (233) of each said sleeve (23) with an associated said number wheel (25) upon the rotation thereof generates a sound.
4 more elements
Dependencies are inferred from the claim text.