US3673640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag closure
Assignee: Individual
•
Filing: 1971-01-13
•
Granted: 1972-07-04
•
Expires: 1991-01-13
Abstract
Abstract A closure for sealing the mouth of a bag including a bowed strap and a clamping bar struck from the interior thereof and hinged at one end to the strap. Striking the clamping bar from the interior of the strap leaves an elongated slot in the strap defined by a plurality of contiguous edges. A hook is provided on the other end of the clamping bar which can be snapped over an edge of the slot in the strap with one hand to lock the strap and bar together. Prior to locking them together, the mouth of the bag to be sealed is inserted between the strap and clamping bar.
Inventors
- 👤 Dwight C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:37
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/1658; B65D33/1675; Y; Y10; Y10T; Y10T24/00; Y10T24/15
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
A one-piece bag closure comprising: a bowed strap including slot defined by a plurality of edges, a pivotable clamping bar having an inner end integrally connected to said strap at one end of said strap, the outer end of said bar being free, said strap and said bar being apart except at the pivot joint, the distance between said strap and said bar sufficient to receive entry of a bag mouth, said strap slot being of a width substantially equal to said bar width but wide enough to permit entry of said bar, said bar free end having a rounded U-shaped portion for releaseably engaging the terminal edge of said strap slot when said bar and strap are brought together, whereby a bag mouth inserted therebetween is tightly sealed.
Claim 2
Dependent Claim
129 words
A one-piece bag closure comprising: a bowed strap including slot defined by a plurality of edges, a pivotable clamping bar having an inner end integrally connected to said strap at one end of said strap, the outer end of said bar being free, said strap and said bar being apart except at the pivot joint, the distance between said strap and said bar sufficient to receive entry of a bag mouth, said strap slot being of a width substantially equal to said bar width but wide enough to permit entry of said bar, said bar free end having a rounded U-shaped portion for releaseably engaging the terminal edge of said strap slot when said bar and strap are brought together, whereby a bag mouth inserted therebetween is tightly sealed.
Claim 3
Dependent Claim
18 words
A bag closure in accordance with claim 1 wherein said bowed strap is substantially arcuate throughout its length.
Claim 4
Dependent Claim
20 words
A bag closure in accordance with claim 1 wherein said bowed strap is bent at an angle intermediate its ends.
Claim 5
Dependent Claim
26 words
A bag closure in accordance with claim 1 wherein guide means for centering the movement of said clamping bar depend from opposite edges of said slot.
Claim 6
Dependent Claim
51 words
A bag closure in accordance with claim 1 wherein the length of said clamping bar measured from its pivotal connection to said bowed strap to the outer end of said hook is at least slightly greater than the planar linear distance of one end of said elongated slot to the other.
Claim 7
Dependent Claim
39 words
A bag closure in accordance with claim 1 wherein sad bar free end includes a S-shaped hook, the outer portion of said hook being adapted to snap over and be releasably retained by the terminal edge of said slot.
Claim 8
Dependent Claim
16 words
A bag closure in accordance with claim 6 wherein said hook opens towards said bowed strap.
Claim 9
Dependent Claim
17 words
A bag closure in accordance with claim 6 wherein said hook opens away from said bowed strap.
Claim 10
Dependent Claim
44 words
A bag closure in accordance with claim 8 wherein said bowed strap incluDes a second slot extending transversely to the direction of said first slot and said hook on the other end of said clamping bar being received through said first and second slots.
References Cited (Backward Citations)
AT3797B
Cited
FR827172A
Cited
GB615090A
Cited
US2553370A
Cited
US2539367A
Cited
US2884934A
Cited
US3112542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |