Brakes – Vehicle – Positive lock
Reexamination Certificate
2001-08-13
2002-11-26
Lavinder, Jack (Department: 3613)
Brakes
Vehicle
Positive lock
C188S069000, C188S265000
Reexamination Certificate
active
06484851
ABSTRACT:
TECHNICAL FIELD
The present invention relates to parking brakes and, more specifically, to an improved parking brake in which interruption of the parking brake is achieved not by disk pad fixation but by pin fixation to achieve secure interruption and to securely brake.
BACKGROUND ART
Automobile brake is typically achieved by foot or hand brakes in which lever or linkage is used to interrupt brake wheel and brake disk of the rear brake drum by use of cable or rod.
When the operator pulls the actuating lever up in a hand brake, the cable connected to the actuating lever causes the disk pad in the caliper to contact the brake disk in order to interrupt the wheels.
In a drum brake type as well as the disk brake type, the cable moves the brake shoes arranged within the drum by actuation of the lever, so that the braking wheel of the brake drum is interrupted.
The actuating lever of the parking brake as described above needs to be within easy reach from foot or hand, in order to readily park as necessary.
Conventional parking brake is typically installed on the floor between the driver's seat and the front seat, and parking is made by pulling the lever up with hand.
The parking brake is made in such a manner that the disk pad and brake shoes are attached to the disk and drum for interruption by pulling up the actuating lever. Because the wheels are conventionally interrupted by surface contact of the disk and disk pad, long-term use brings about abrasion of the disk pad, so that interruption is not ensured.
While the automobile is parked on a slope for a long time or frequently, the disk pad is easily worn, which lowers the braking force and the interruption of the wheels. This has a disadvantage of possibly allowing the automobile to accidentally roll.
Use of a cable in the conventional parking brake increases tension of the cable, which causes to lower interruption on the wheels as well.
SUMMARY OF THE INVENTION
The present invention is derived to solve the conventional problems, and has an object to provide an improved brake for automobiles in which interruption of the wheels is made by pin fixation, not by a disc pad fixation, thereby improving interruption and reliability of the parking brake.
Another object of the invention is to provide an improved brake for automobiles to prevent low interruption of the wheels in a long-time use.
Still another object of the invention is to provide an improved brake for automobiles to improve reliability and marketability of the product.
In order to accomplish the above objects, there is provided a parking brake for automobiles, comprising: brake disk
10
formed with a predetermined width and size, having ratchets
11
at the outer surface of the brake disk, to secure interruption of the wheels in parked automobiles; caliper
20
arranged on the brake disk
10
, having an inserting groove
21
; intermittent member
30
engaged into the inserting groove
21
, for selectively controlling the brake disk
10
; connecting arm
40
connected with the intermittent member
30
, for delivering an actuating force to the intermittent member
30
upon actuating the parking brake lever
5
; connector
50
hingedly connected to the connecting arm
40
at a first end and having a second end; and link member
60
having a movable link
61
connecting to the the second end of the connector
50
to laterally actuate the connector
50
upon actuation of the parking brake lever
5
, fixed link
62
associated with the movable link
61
, and a return spring arranged between the movable link
61
and the fixed link
62
; a pair of auxiliary links
90
on the movable link
61
and the fixed link
62
; and actuating bar
100
arranged on the auxiliary links
90
to deliver the actuating force of the parking brake lever
5
to the auxiliary links
90
.
Pulling up the parking brake lever
5
of the present invention causes the auxiliary links
90
and the link member
60
to be actuated for engagement of the intermittent member
30
into the ratchet
11
of the brake disk
10
by successive operation of the connector
50
and the connecting arm
40
, thereby interrupting the brake disk
10
. By this operation, the brake disk
10
is actuated to secure interruption of the parked wheels.
REFERENCES:
patent: 677635 (1901-07-01), Callahan et al.
patent: 1872146 (1932-08-01), Jackson
patent: 2425574 (1947-08-01), Stewack
patent: 3241637 (1966-03-01), Temple
patent: 5113977 (1992-05-01), Ridings et al.
patent: 5799756 (1998-09-01), Roberts et al.
patent: 5887489 (1999-03-01), Zerrer
patent: 5983745 (1999-11-01), Petrak
patent: 6105732 (2000-08-01), Venetos
patent: 397521 (1933-08-01), None
Lavinder Jack
Madson & Metcalf
Williams Thomas J.
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