US3744284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tamper-proof security device
Assignee: Individual
•
Filing: 1972-02-22
•
Granted: 1973-07-10
•
Expires: 1992-02-22
Abstract
Abstract A tamper-proof vehicle security device for lockable attachment to the coupling means of a trailer to prevent unauthorized securement of a driving vehicle to the trailer. The securing device includes a housing which surrounds the coupling means, and chain elements are moveable within the housing to lock the housing to the coupling means or permit removal of the securing device. The chain elements are operatively connected to a lock mechanism to effect a desired locking operation. The housing is provided with an exteriorly positioned handle to facilitate mounting and removal of the security device from the trailer.
Inventors
- 👤 C Waldenstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:02
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0842; B62D53/085; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5611; Y10T70/5854; Y10T70/5867
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A security device for surrounding lockable attachment to the kingpin of a trailer to prevent unauthorized coupling to a mororized vehicle comprising a hollow housing having an opening for receiving a kingpin of a trailer in surrounding relationship thereto, lock means mounted within the housing for lockable attachment of the housing to the kingpin, said lock means including chain means movable from an unlocked position out of contact with the kingpin on which the housing is mounted to a locked position in contact with the kingpin to secure the housing thereto, and said chain means when in a locked position surrounding a substantial portion of the periphery of the kingpin.
Claim 2
Dependent Claim
110 words
A security device for surrounding lockable attachment to the kingpin of a trailer to prevent unauthorized coupling to a mororized vehicle comprising a hollow housing having an opening for receiving a kingpin of a trailer in surrounding relationship thereto, lock means mounted within the housing for lockable attachment of the housing to the kingpin, said lock means including chain means movable from an unlocked position out of contact with the kingpin on which the housing is mounted to a locked position in contact with the kingpin to secure the housing thereto, and said chain means when in a locked position surrounding a substantial portion of the periphery of the kingpin.
Claim 3
Dependent Claim
26 words
The security device of claim 1 wherein the chain means includes a plurality of pairs of parallel link elements interconnected by a plurality of pivot posts.
Claim 4
Dependent Claim
18 words
The security device of claim 1 wherein the hollow housing possesses a cylindrical configuration having a closed end.
Claim 5
Dependent Claim
30 words
The security device of claim 1 wherein one end of the chain means is immovably attached to the housing and the other end is adapted to be movable relative thereto.
Claim 6
Dependent Claim
23 words
The security device of claim 4 wherein said lock means includes a linkage means for moving the other end of the chain means.
Claim 7
Dependent Claim
43 words
The security device of claim 5 wherein the other end of the chain means is movable from a position spaced from said one end of the chain means in the locked position to a position adjacent said one end in an unlocked position.
Claim 8
Dependent Claim
19 words
The security device of claim 5 wherein the linkage means is operatively connected to an exteriorly accessible lock mechanism.
Claim 9
Dependent Claim
31 words
The security device of claim 1 further comprising abutment means mounted in the housing for contacting an end of the kingpin and limit the depth of penetration thereof in the housing.
Claim 10
Dependent Claim
21 words
The security device of claim 1 further comprising handle means attached to the exterior of the housing to facilitate manipulation thereof.
References Cited (Backward Citations)
US2554306A
Cited
US2641124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |