Dual-mode padlock

• US 7,370,498 B1
• Filed: 05/18/2007
• Issued: 05/13/2008
• Est. Priority Date: 05/18/2007
• Status: Expired due to Fees

• Current Assignee: Jin Tay Industries Co.
• Original Assignee: Jin Tay Industries Co.
• Inventors: Miao, Tony
• Primary Examiner(s): BARRETT, SUZANNE LALE DINO
• Application Number:
  US11/804,384
• Time in Patent Office: 361 Days
• Field of Search: 70 21- 30, 70 38 R- 38 C, 70/49, 702/84, 702/85, 703/12, 703/86
• US Class Current: 70/21
• CPC Class Codes: E05B 37/0034 actuated by either
• CPC Class Codes: E05B 37/025 in padlocks
• CPC Class Codes: E05B 67/003 Chain, wire or cable locks alarms therefor E05B45/005; E05B69/006 takes precedence
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/452 Sliding
• CPC Class Codes: Y10T 70/7141 Combination and key
• CPC Class Codes: Y10T 70/7147 Combination or key

Abstract

A dual-mode padlock can be unlatched by dialing a combination assembly or an associated key. The dual-mode padlock has a latching element movably mounted inside to engage with or disengage from a latch. When the dual-mode padlock is locked, the user can directly push the latch into a mounting groove to engage with the latching element and make the dual-mode padlock locked, without use of the associated key or dialing of the combination assembly. This makes it timesaving and convenient to lock the dual-mode padlock.

Claims

1. A dual-mode padlock comprising

a housing having

a holding bracket being mounted slidably in housing and having

a top protruding from the housing;

an outer surface;

multiple engaging notches being formed in the outer surface of the holding bracket and adjacent to each other;

a mounting groove being formed longitudinally in the housing and having

a top opening;

a bottom;

an inner surface; and

a latching channel being formed through the inner surface of the mounting groove selectively aligning with one of the engaging notches; and

a latching element being movably arranged in the latching channel and selectively engaging with one of the engaging notches of the holding bracket;

a latch being mounted movably in the housing and having a latching recess selectively aligning with the latching channel to engage with and be retained by the latching element; and

a cylinder mechanism having

a cylinder being mounted rotatably in the holding bracket and having

an outer surface; and

an actuating bar extending out from the outer surface of the cylinder and having a distal end corresponding to the latching channel; and

a combination assembly having

a pintle being movably mounted longitudinally in the housing and abutting the holding bracket; and

multiple wheel assemblies being mounted rotatably around the pintle respectively in the housing and being able to be rotated to determined positions where allowing the pintle and the holding bracket to move downward whereby the latching element engages with one of the engaging notches.

2. The dual-mode padlock as claimed in claim 1, wherein

the housing has

a top;

an outer surface;

two sides;

a combination chamber; and

a cylinder chamber being formed through the top of the housing;

the holding bracket is mounted slidably in the cylinder chamber of the housing;

the pintle of the combination assembly is movably mounted longitudinally in the combination chamber of the housing; and

the wheel assemblies of the combination assembly is mounted in the combination chamber of the housing.

3. The dual-mode padlock as claimed in claim 2, wherein

the mounting groove further has a first resilient element being mounted in the mounting groove and having a top end pushing the latch;

and

the cylinder chamber further has a second resilient element being mounted securely in the cylinder chamber and having a top end abutting the actuating bar of the cylinder.

4. The dual-mode padlock as claimed in claim 3, wherein

the housing further has a latching hole being defined in the outer surface on the top of the housing near one side of the housing;

the mounting groove of the housing further has a limit being formed on the inner surface near the top opening of the mounting groove; and

the latch further has a

a latching end corresponding to the latching hole of the housing and being latched in the latching hole when the latching recess of the mounting portion engaging with the latching element;

a mounting portion being slidably mounted in the mounting groove of the housing and having

a side surface,

a bottom end abutting the first resilient element; and

a limit hole being elongated and being longitudinally formed through the mounting portion of the latch to receive the limit in the mounting groove to limit a slide distance of the latch relative to the housing, wherein

the latching recess is formed in the side surface of the mounting portion.

5. The dual-mode padlock as claimed in claim 3, wherein

the mounting groove further has

an inner salient being formed on the inner surface near the top opening of the mounting groove of the housing;

and

a holding block being mounted on the top end of the first resilient element and having

a top;

a bottom; and

a flange being formed around the bottom of the holding block and selectively abutting the inner salient of the mounting groove;

the latch is flexible and has

a proximal end being mounted securely in the housing;

a distal end; and

a latching block connecting securely to the distal end of the latch and abutting the holding block; and

the latching recess is formed around the latching block.

6. The dual-mode padlock as claimed in claim 3, wherein

the holding bracket further has a holding recess being formed in the holding bracket and having

an inner surface;

and

two latching notches formed in the inner surface of the holding recess and opposite to each other; and

the cylinder of the cylinder mechanism has

a top;

a bottom;

two ends;

a keyhole being formed longitudinally through one end of the cylinder; and

multiple slits being formed diametrically in the top and the bottom of the cylinder and communicating with the keyhole respectively; and

the cylinder mechanism further has

multiple actuating elements being flat and being movably mounted in the slits of the cylinder selectively, and each actuating element having

a center;

two sides;

a central aperture being formed through the center of the actuating element and having a length; and

a salient; and

multiple springs being mounted in the slits and abutting respectively the salients of the actuating elements to make the actuating elements protruding from the slits and engaging in the latching notches of the holding recess of the holding bracket to retain the cylinder in position.

7. The dual-mode padlock as claimed in claim 3, wherein

the housing further has multiple openings being formed through the outer surface and being aligned with each other;

the combination chamber of the housing further has multiple wheel recesses aligning and communicating with the openings of the housing, respectively; and

the pintle of the combination assembly having

a surface; and

multiple protrusions formed separately on the surface and formed into multiple groups; and

the wheel assemblies of the combination assembly being in the wheel recesses respectively and corresponding respectively to the openings of the housing, and each wheel assembly including

a wheel having

an outer edge;

a central hole being formed through the wheel and having an inner edge;

multiple flutes being formed around the outer edge of the wheel to divide the outer edge into equal segments, and each segment having a unique number; and

a wheel bracket being tubular, being mounted rotatably around the pintle, corresponding to and held on the wheel and having

a top;

a bottom;

a flange being formed on and protruding radially out from the top of the wheel bracket and being mounted in the central hole in the wheel; and

a combination hole being formed longitudinally through the wheel bracket, selectively holding a corresponding group of the protrusions on the pintle and having

an inner edge; and

multiple holding recesses defined in the inner edge of the combination hole and selectively aligning with and holding the corresponding group protrusions on the pintle.

8. The dual-mode padlock as claimed in claim 7, wherein

the holding bracket further has

a bottom;

and

a pushing rod protruding from the bottom of the holding bracket; and

the pintle further has a top stage abutting the pushing rod of the holding bracket.

9. The dual-mode padlock as claimed in claim 8, wherein the combination assembly further has a retaining spring being mounted around the pintle between the top stage of the pintle and the flange of an uppermost one of the wheel brackets to push the pintle upward.

10. The dual-mode padlock as claimed in claim 7, wherein the combination assembly further has a resilient detent being mounted securely in the housing and having multiple retaining ends respectively abutting and sliding on the outer edge of the wheels and engaging the flutes on the wheels to hold the wheels in the corresponding opening.

11. The dual-mode padlock as claimed in claim 7, wherein

each wheel further has multiple teeth being formed on and protruding in from the inner edge of the central hole;

and

each wheel bracket further has multiple retaining teeth being formed around the wheel bracket below the flange and engaging the teeth in the central hole of a corresponding one of the wheels.