Combination padlock with a name card

• US 7,458,240 B1
• Filed: 07/24/2007
• Issued: 12/02/2008
• Est. Priority Date: 07/24/2007
• 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:
  US11/878,413
• Time in Patent Office: 497 Days
• Field of Search: 70/21, 70 25- 30, 70/38.A, 702/84, 702/85, 70/51, 70/52, 70 54- 56, 704/60, 403/30
• US Class Current: 70/21
• CPC Class Codes: E05B 17/226 Displays on locks, e.g. LED or LCD screens on handles E05B1/0084; on keys E05B19/0088
• CPC Class Codes: E05B 37/0058 by axial disengagement between hub and rim of tumbler discs or rings
• CPC Class Codes: E05B 37/025 in padlocks
• CPC Class Codes: E05B 67/02 Cases
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/487 Parts, accessories, attachments and adjuncts
• CPC Class Codes: Y10T 70/493 Protectors
• CPC Class Codes: Y10T 70/7141 Combination and key
• CPC Class Codes: Y10T 70/8811 Key identification

Abstract

A combination padlock with a name card has a housing, a card clamp, multiple dial cores, a shackle, a locking shaft and a key core. The housing has a card surface. The card clamp is mounted detachably on the card surface and holds a name card to indicate who owns the padlock. The dial cores are mounted in the housing, have a combination and provide a combination locking capability. The shackle is U-shaped and has a mounting end and a locking end. The mounting end is mounted through the dial cores. The locking end detaches from the housing. The locking shaft is mounted in the housing and selectively meshes the shackle with the dial cores. The key core is mounted in the housing, locks and releases the shackle by a key and allows a person to unlock the padlock when the combination is forgotten.

Claims

1. A combination padlock comprising

a housing comprising two housing halves and having

an outside surface;

a top;

a bottom;

a proximal side;

a distal side;

a locking recess being formed in the top of the housing on the distal side; and

a card surface being formed in the housing on the distal side and having a mounting surface; and

a card clamp being transparent, corresponding to and being mounted on the mounting surface of the card surface and having

a top; and

a locking hole being defined in the top of the card clamp and selectively corresponding to the locking recess of the housing when the card clamp is mounted on the mounting surface of the card surface; and

a U-shaped shackle having

a mounting end being mounted slidably and rotatably in the housing and being selectively latched;

a locking end corresponding to and selectively aligning with the locking recess and the locking hole of the card clamp, being selectively mounted through the locking recess and the locking hole of the card clamp.

2. The combination padlock as claimed in claim 1, wherein

the card surface of the housing is recessed from the surface of the housing and has multiple connecting slots formed in the mounting surface of the card surface;

and

the card clamp has multiple tabs corresponding to and detachably mounted in the connecting slots.

3. The combination padlock as claimed in claim 2, wherein

the housing further has

a dial core cavity being formed longitudinally in the proximal side of the housing through the top and having

an inner surface;

an opening being formed in the top of the housing and communicating with the dial core cavity;

multiple annular recesses being larger than the dial core cavity and being formed coaxially in the dial core cavity;

multiple windows being formed in the proximal side of the housing, being adjacent to the proximal side, communicating with the dial core cavity and corresponding respectively to the annular recesses;

multiple protrusions being formed on and protruding in from the inner surface of the dial core cavity adjacent respectively to the annular recesses and being arranged in a row; and

a slot being formed longitudinally in the opening and having a bottom;

a cavity extension being formed in the housing coaxially with the dial core cavity, communicating with the dial core cavity and having a bottom;

a locking shaft cavity being straight, being formed in the housing and having two ends, one end of the locking shaft cavity communicating with the cavity extension; and

a key core cavity being formed in the bottom of the housing on the distal side, communicating with the other end of the locking shaft cavity and having an opening being formed in the bottom of the housing coaxially with the key core cavity and communicating with the key core cavity;

multiple dial cores are coaxially mounted rotatably in the dial core cavity and are arranged in a row, and each dial core has

a shaft being tubular, being mounted coaxially, slidably and rotatably in the dial core cavity, abutting adjacent shafts and having

an outside surface;

multiple ribs being formed longitudinally on the outside surface of the shaft around the shaft, protruding radially from the outside surface of the shaft and being between adjacent protrusions, each rib having an outer end pointing to the opening of the dial lock cavity;

a gap being formed on the outside surface of the shaft by removing one of the ribs and being bigger than corresponding protrusions; and

a through hole being formed coaxially through the shaft; and

a dial ring being mounted rotatably in a corresponding annular recess, being mounted coaxially, slidably and rotatably around the shaft and having

a ring hole;

an outer surface being exposed in a corresponding window;

an inner surface;

multiple teeth being formed on and protruding in from the inner surface of the dial ring, being flush with the shaft and engaging the outer end of the ribs; and

multiple numbers being formed sequentially around the outer surface of the dial ring;

a locking limit is mounted coaxially, slidably and rotatably in the cavity extension, abuts a nearest shaft of the dial cores, selectively enters the ring hole of a corresponding dial ring and has

a bottom;

an outer surface being annular, corresponding and being adjacent to the locking shaft cavity;

a rod hole being formed coaxially through the locking limit and aligning with the through holes in the shafts;

an annular hole formed in the outside surface of the locking limit and communicating with the rod hole;

a retaining ball being mounted movably in the annular hole and selectively partially entering the rod hole and the locking shaft cavity; and

a spring mounted between the bottom of the cavity extension and the bottom of the locking limit;

a locking shaft is mounted slidably in the locking shaft cavity and has

a pressing end corresponding to the retaining ball and selectively pressing the retaining ball; and

a leading end facing the key core cavity and selectively moving partially into the key core cavity; and

a key core is selectively unlocked and rotated, is mounted securely in the key core cavity and has

an outside surface selectively pressing the locking shaft;

a keyhole communicating with the opening in the key core cavity; and

a recess being formed on the outside surface of the key core, corresponding to the leading end of the locking shaft and selectively facing to the leading end; and

wherein the U-shaped shackle is mounted in the dial core cavity and the cavity extension and

the mounting rod end is mounted slidably and rotatably through the through holes in the shafts, being mounted in the rod hole of the locking limit and having a recess being bowl-like and corresponding to the retaining ball;

the locking end corresponding to and selectively aligning with the locking recess, being mounted slidably and detachably in the locking recess; and

the U-shaped shackle further has a positioning protrusion being formed on and protruding from the shackle and corresponding to the slot.

4. The combination padlock as claimed in claim 3, wherein the dial core cavity further has a positioning slot formed longitudinally in the opening and being deeper than the slot in the housing;

and

the positioning protrusion on the shackle corresponds to the positioning slot.

5. The combination padlock as claimed in claim 4, wherein

the pressing end of the locking shaft is flat;

and

the leading end of the locking shaft is round.