US4674664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backsack
Assignee: Individual
•
Filing: 1985-12-31
•
Granted: 1987-06-23
•
Expires: 2005-12-31
Abstract
Abstract A backsack including a flexible pouch with an open upper end, and an opposed pair of shoulder straps. The shoulder straps comprise elongate cords looped about the open end of the pouch in opposite directions for a contraction of the open end and a closing of the pouch upon an outward pull on the straps. The looped cords are engaged through apertures at the closed bottom of the pouch, each cord extending beyond the corresponding aperture and forming a waist strap.
Inventors
- 👤 Jonathan D. Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:23
CPC Classifications
A; A45; A45F; A45F3/00; A45F3/04; A45F2003/045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
214 words
A backsack comprising a pouch and a pair of opposed shoulder straps, said pouch including a peripheral wall, a closed bottom and an open top, said peripheral wall including an upper section defining said open top, said upper section being selectively inwardly contractable to close said open top, separate cooperating closure means, one on each shoulder strap, engaged with said upper section for a contraction of said upper section in response to an outward movement of said shoulder straps relative to each other, aperture means on said pouch adjacent said closed bottom, each shoulder strap having a lower end thereof remote from the closure means engaged through said aperture means, each said shoulder strap defining a shoulder receiving sling between the lower end thereof and the corresponding closure means, and a pair of waist lines, each of said waist lines defining an extension of one of the shoulder straps beyond the aperture means, said waist lines extending from said pouch at the lower ends of said shoulder straps for outward movement relative to the aperture means and for tying engagement about the waist of a wearer, each of said shoulder straps being freely outwardly movable through the aperture means upon outward movement of the waist lines for a contraction of the shoulder receiving slings.
Claim 2
Dependent Claim
214 words
A backsack comprising a pouch and a pair of opposed shoulder straps, said pouch including a peripheral wall, a closed bottom and an open top, said peripheral wall including an upper section defining said open top, said upper section being selectively inwardly contractable to close said open top, separate cooperating closure means, one on each shoulder strap, engaged with said upper section for a contraction of said upper section in response to an outward movement of said shoulder straps relative to each other, aperture means on said pouch adjacent said closed bottom, each shoulder strap having a lower end thereof remote from the closure means engaged through said aperture means, each said shoulder strap defining a shoulder receiving sling between the lower end thereof and the corresponding closure means, and a pair of waist lines, each of said waist lines defining an extension of one of the shoulder straps beyond the aperture means, said waist lines extending from said pouch at the lower ends of said shoulder straps for outward movement relative to the aperture means and for tying engagement about the waist of a wearer, each of said shoulder straps being freely outwardly movable through the aperture means upon outward movement of the waist lines for a contraction of the shoulder receiving slings.
Claim 3
Dependent Claim
57 words
The backsack of claim 1 including limit means on each said shoulder strap limiting retraction of said shoulder strap lower ends through said aperture means upon outward movement of said shoulder straps relative to each other while allowing the free outward movement of said shoulder straps through said aperture means upon outward movement of said waist lines.
Claim 4
Dependent Claim
55 words
The backsack of claim 2 wherein said closure means of each of said shoulder straps comprises a loop encircling said upper section, the loops on said pair of shoulder straps being oppositely directed and in overlying relation to each other, and retaining means on said upper section of the wall slidably receiving said loops therethrough.
Claim 5
Dependent Claim
34 words
The backsack of claim 3 wherein said retaining means comprises a sleeve defined from said upper section about said open top, said sleeve having a pair of opposed openings aligned with said shoulder straps.
Claim 6
Dependent Claim
46 words
The backsack of claim 3 wherein each shoulder strap and corresponding waist line comprises a single length of cord, a portion of said length of cord being folded on itself to define the corresponding loop and knotted beyond said aperture means to define said limit means.
Claim 7
Dependent Claim
55 words
The backsack of claim 1 wherein said closure means of each of said shoulder straps comprises a loop encircling said upper section, the loops on said pair of shoulder straps being oppositely directed and in overlying relation to each other, and retaining means on said upper section of the wall slidably receiving said loops therethrough.
Claim 8
Dependent Claim
34 words
The backsack of claim 6 wherein said retaining means comprises a sleeve defined from said upper section about said open top, said sleeve having a pair of opposed openings aligned with said shoulder straps.
References Cited (Backward Citations)
US403928A
Cited
US467108A
Cited
US931627A
Cited
US1095790A
Cited
US2552443A
Cited
US2678672A
Cited
US4332379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |