US3974668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self securing theft proof chain binder
Assignee: Individual
•
Filing: 1975-05-27
•
Granted: 1976-08-17
•
Expires: 1995-05-27
Abstract
Abstract A self securing theft proof chain binder, such as would be used to tightly cinch a chain tightly holding a cargo to a truck flat bed. The binder has hooks on either of its ends to attach to the ends of the chain overlapping the cargo and the binder is pivoted in the middle so that when it has been squeezed together it tightly draws together the two ends of the chain. The lever arm on the binder has projecting spur with notch teeth therein which in turn mates with a lock on the other half of the binder so that when the two halves are squeezed together they lock in place.
Inventors
- 👤 Delmer L. McWhorter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:34
CPC Classifications
E; E05; E05B; E05B73/00; E05B73/0005; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/411; Y10T70/50; Y10T70/5009; Y10T70/5022
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
70 words
A self securing theft proof chain binder comprising a lever arm; a fitting at the inner end of the lever arm; a chain hook attached to the fitting; a first swivel attached to the fitting; a lock attached to the first swivel; a second swivel connected to the lock; another chain hook attached to the second swivel and means forming part of the lever arm for mating with the lock.
Claim 2
Dependent Claim
70 words
A self securing theft proof chain binder comprising a lever arm; a fitting at the inner end of the lever arm; a chain hook attached to the fitting; a first swivel attached to the fitting; a lock attached to the first swivel; a second swivel connected to the lock; another chain hook attached to the second swivel and means forming part of the lever arm for mating with the lock.
Claim 3
Dependent Claim
22 words
The device of claim 1 wherein the means for mating with the lock is a spur extension with notches along its length.
Claim 4
Dependent Claim
32 words
The device of claim 2 wherein the lock has a passage therethrough for receiving the spur extension and the notches on the spur extension are held by a latch within the lock.
Claim 5
Dependent Claim
25 words
The device of claim 3 wherein the chain hook and the first swivel are pivotally attached to the fitting on the end of lever arm.
Claim 6
Dependent Claim
37 words
The device of claim 4 wherein the first and second swivels permit rotation of the lock so that the passage through the lock may be aligned to receive the spur extension when the chain binder is closed.
References Cited (Backward Citations)
US2564821A
Cited
DE821566C
Cited
US3071348A
Cited
US3271007A
Cited
US3418008A
Cited
US3789464A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-17 | 1980-02-16 | 1980-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-17 | 1984-02-16 | 1984-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-17 | 1988-02-16 | 1988-08-17 | $7700.00 | Window Closed / Lapsed |