Dual locking padlock
AssigneeThe Sun Lock Company Ltd.
InventorsEric Lai, Karl Lai
Life of this patent
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Abstract
By providing a single housing and shackle assembly constructed for enabling the shackle to be opened and/or closed using either a rotatable dial combination construction or a key activating tumbler construction, with the movement of the shackle being controlled by a trigger member, an effective, easily produced, padlock is achieved which incorporates two separate and independent locking systems formed in a single padlock. In addition, the trigger member and shackle each incorporate uniquely constructed, cooperating surfaces, each of which comprise a grooved zone or concave curved zone which is positioned directly adjacent a cooperating convexly curved zone. By employing these two curved surfaces on both the shackle and trigger member, the controlled pivotal movement of the shackle is realized.
Claims23
A dual mode locking padlock constructed for providing two separate and independent locking means in a single, integrated construction, said padlock comprising:
- A. a housing incorporating a key controlled locking assembly formed therein and a combination controlled locking assembly formed therein and positioned adjacent to the key controlled locking assembly, with each of said locking assemblies being operable independently of the each other;
- B. a locking member in the form of a shackle constructed for being movable between a locked position and an unlocked position, said unlocked position being controlled by the activation of either the key controlled locking assembly or the combination controlled locking assembly, and comprising a base
- a) formed at one and of the shackle,
- b) pivotally mounted to the housing, and
- c) incorporating a first curved zone and a second curved zone formed along a side edge of the base and positioned adjacent to each other, said first curved zone comprising a concave shape and said second curved zone comprising a convex shape;
- and
- C. a trigger member
- a) pivotally mounted to the housing in cooperating relationship with the base of the locking member,
- b) incorporating a first curved zone and a second curved zone formed along a side edge of the trigger member and positioned adjacent to each other, said first curved zone comprising a concave shape and said second curved zone comprising any convex shape,
- c) said first curved zone and second curved zone of the trigger member being positioned in controlling, cooperating, aligned relationship with the first curved zone and second curved zone of the base of the locking member for controlling the articulate pivoting movement of said base, and
- d) comprising a movement control arm formed thereon and constructed for controllably moving the trigger member relative to the housing in response to the activation of the combination controlled locking assembly or the key controlled locking assembly for positioning the first curved zone and second curved zone thereof in a desired position relative to the first curved zone and second curved zone of the base of the locking member,
- whereby activation of either the key controlled locking section or the combination controlled locking section causes the trigger member to move between a shackle locking position and a shackle releasing position.
Dependencies are inferred from the claim text.