Steering wheel lock with alarming device

• US 5,598,725 A
• Filed: 03/28/1996
• Issued: 02/04/1997
• Est. Priority Date: 03/28/1996
• Status: Expired due to Fees

• Current Assignee: Chao-Sheng Chang
• Original Assignee: Chao-Sheng Chang
• Inventors: Chang, Chao-Sheng
• Primary Examiner(s): Gall, Lloyd A.
• Application Number:
  US08/620,548
• Time in Patent Office: 313 Days
• Field of Search: 70/DIG. 49, 70/209, 70/211, 70/212, 70/225, 70/226, 70/237, 70/238, 70/239, 180/287, 340/425.5, 340/426
• US Class Current: 70/209
• CPC Class Codes: B60R 25/0225 using a rod locked on the steering wheel rim B60R25/0221 takes precedence
• CPC Class Codes: Y10S 70/49 with alarm
• CPC Class Codes: Y10T 70/5765 Rotary or swinging
• CPC Class Codes: Y10T 70/5841 Rotation blocking

Abstract

A steering wheel lock equipped with all alarming device which can be actuated on the lock being sabotaged or cut off. The steering wheel lock has an alarm unit in connection to an actuation switch having a retractable button. An indirect transmission member has a spring biased drive pin the bottom of which can fall on a smooth front section or in a recess of the dentiform section of the lock stick so that the top end of the drive pin can be engageable with the retractable button of the actuation switch or can separate therefrom respectively. So, the first alarm means can be put in a reset mode and in an operation mode accordingly. As a burglar sabotages the steering wheel lock, the first alarm on the alert can be actuated as a result of shaking or vibration and produces alarm sound to the maximum level of 120 dB.

Claims

1. A steering wheel lock for use on vehicles, comprising:

a lock stick having a smooth front section connected to

a locking section having a plurality of spaced dentiform protrusions with a recess defined between every pair of protrusions;

a receiving sheath in which said lock stick is movably inserted;

a guard box mounted to said receiving sheath;

a lid engaged with said guard box having an openable gate for easy replacement of battery means housed therein;

a first alarm means in connection to an actuation switch;

a second alarm means in connection to an actuation switch;

a power supply means housed in said guard box for supply of power to said first and second alarm means;

an indirect transmission means disposed in a through hole defined in said receiving sheath;

said guard box having a lock mounting hole

a speaker being disposed adjacent to the lock mounting hole;

an LED disposed next to said lock mounting hole being connected to said first alarm means and said second alarm means by wires;

said guard box having a number of retaining members for fixing said first and said second alarm means in place;

said first alarm means having an actuation switch which is equipped with a retractable button;

said indirect transmission means having a drive pin having a top head disposed in alignment with said retractable button of said actuation switch in such a manner that as said top head is urged to move upwardly, said retractable button is pushed inwardly;

said transmission means having a driven end which falls into one of said recesses of said dentiform protrusions of said lock stick so as to keep said top head of said drive pin from coming into contact with said actuation switch;

said top head of said drive pin of said transmission means coming into contact with said retractable button, forcing said button to be pressed inwardly, as said driven end of said transmission means is in contact with said smooth front section of said lock stick, rendering said first alarm means in a reset state without being actuated.

2. The steering wheel lock as claimed in claim 1 wherein a reset pin is disposed in one corner of said guard box and is insertable into the actuation switch of said second alarm means so as to stop said second alarm means from functioning;

and said second alarm means is actuated on said reset pin being pulled out of engagement therewith when said steering wheel lock is not mounted to a steering wheel of a vehicle.