Locks – Portable – Padlocks
Reexamination Certificate
2002-05-16
2003-04-29
Barrett, Suzanne Dino (Department: 3676)
Locks
Portable
Padlocks
C070S034000, C070S233000, C070S370000
Reexamination Certificate
active
06553793
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a motorcycle disc brake lock, particularly to one able to be unlocked by applying a key to turn around the rotary member of a lock spindle to move up a deadbolt, and to be locked only by inserting the brake saucer of a motorcycle into the cut groove of a lock body to slightly push up the deadbolt to let a locking card move up and disengage from the engage recesses to get into the slide groove of the rotary base by the recovering resilience of a twist spring. Then, the deadbolt together with the locking card is pushed downward by the recovering resilience of a coil spring on the deadbolt to force the bottom end of the locking bolt inserted into the lock groove under the cut groove of the lock body.
2. Description of the Prior Art
A conventional motorcycle disc brake lock, as shown in 
FIGS. 1 and 2
, includes a lock body 
10
, a locking member 
11
, an actuating bolt 
12
, a cover 
120
, a lock base 
13
, a fitting member 
14
, two springs 
102
, 
15
 and a position pin 
16
 combined together.
The lock body 
10
 is formed with a vertical opening 
100
, having a U-shape, and a vertical receiving hole 
101
 provided in a right portion. The receiving hole 
101
 is fitted inside with the spring 
102
 and the actuating bolt 
12
 having a recessed groove 
121
 under for receiving the spring 
102
 therein. The actuating bolt 
12
 is formed with a notch 
122
 on a lower portion, and a sloped surface 
123
 and a vertical surface 
124
 on top. The cover 
120
 is mounted on and seals up the receiving hole 
101
 of the lock body 
10
. The lock body 
10
 is further provided on the right sidewall with an axial hole 
103
 communicating with the receiving hole 
101
 and aligned to a recessed groove 
104
 on the left portion of the lock body 
10
. Besides, the lock body 
10
 is bored on top with an insert hole 
106
 communicating with the axial hole 
103
, and the axial hole 
103
 is fitted inside with the spring 
15
 and the locking member 
11
 having a slide groove 
110
 and an insert slot 
111
. The locking member 
11
 has a slide groove 
110
 to match with the insert hole 
106
 of the lock body 
10
, with a position pin 
16
 inserted through the insert hole 
106
 and extend in the slide groove 
110
 to restrict the locking member 
11
 to move back and forth within the length of the slide groove 
110
. Then, the actuating bolt 
12
 has its top end engaged in an insert slot 
111
 of the locking member 
11
, which has its rear end housed with a cap 
14
.
In addition, the lock body 
10
 has a lock base hole 
105
 bored laterally beneath the axial hole 
103
 and communicating with the receiving groove 
101
 for receiving the lock base 
13
. The lock base 
13
 is formed with a projection 
130
 at the front end to match with the notch 
122
 on the wall of the actuating bolt 
12
. Thus, a key is used to turn around the lock base to control the actuating bolt 
12
 to move up and down and make for unlock and lock the locking member 
11
.
However, the components of a conventional disc brake lock 
1
 not only have to be orderly installed in multi-direction, but also need to match with one another in assembly, resulting in much trouble and inconvenience in assembling, and increasing producing cost.
SUMMARY OF THE INVENTION
The objective of the invention is to offer a motorcycle disc brake lock able to be locked stably on the disc brake of a motorcycle, easy in assembling and economical in producing.
The feature of the invention is that a lock body is formed with a lock base in an upper portion, the lock base having a chamber provided on the inner wall with two prop projections respectively having a sloped surface and a horizontal surface, two notches respectively formed between the two prop projections, a through hole bored at the bottom of the chamber of the lock base and communicating with a deep opening in a lower portion of the lock body. Further a lock hole formed in the bottom of the deep opening and aligned to the through hole. A rotary base to be received in the chamber of the lock base is provided with a center hollow having a through hole, two slide slots provided oppositely on its annular wall, a projection with an insert hole formed at one side of one of the two slide slots, and two engage recesses and two position grooves respectively and oppositely formed on top. A deadbolt to be fitted in the center hollow of the rotary base is provided with a protruding-out stop member at an upper end and a recess in the center. A locking card to be fixed on the top end of the deadbolt has a through hole in the center and two protruding-out engage members located oppositely. A coil spring has its bottom end fitted in the recess of the deadbolt. A lock column to be received in the chamber of the lock base is provided in the central interior with a rotary member having two lugs positioned oppositely at the bottom and two stop edges fixed oppositely in the annular wall. A twist spring is fitted around the lock column.
REFERENCES:
patent: 4403485 (1983-09-01), Scherbing
patent: 5127244 (1992-07-01), Myers
patent: 5265453 (1993-11-01), Konii et al.
patent: 5577409 (1996-11-01), Oyabu et al.
patent: 5713224 (1998-02-01), Liou
patent: 5819889 (1998-10-01), Shieh
patent: 5916279 (1999-06-01), Shieh
patent: 6237376 (2001-05-01), Surratt
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