Patent US3449486A successfully refreshed from Google Patents.
Patent US4089447A successfully refreshed from Google Patents.
US4089447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back pack device
Assignee: Individual
•
Filing: 1977-07-05
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Granted: 1978-05-16
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Expires: 1997-07-05
Abstract
Abstract A resilient back pack supporting member for carrying loads, particularly for hikers or mountaineers. The resilient supporting member is triangular in cross-section, with the thinner top portion designed to contact the shoulders and the thicker bottom portion designed to contact the lower back of the wearer. The support is fastened to the back by conventional shoulder straps, with the load strapped or otherwise secured to the external rear surface. In one embodiment, the support may be formed of a single triangular slab of foam rubber or the like, covered with a cloth skin. In another embodiment, the interior of the supporting member is stuffed with chips or small pieces of foam rubber or the like. In a third embodiment, the skin is a gas impervious bag which is pumped full of air or oxygen through conventional valve means.
Inventors
- 👤 Hans Wano Achmeteli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
CPC Classifications
A; A45; A45F; A45F3/00; A45F3/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
171 words
A separate back pack support for carrying a load on the back of a wearer which comprises in combination: a resilient cushion-like body having a substantially planar forward major surface constructed for contact with the back of the wearer, and a substantially planar external rear major surface constructed to be secured to the load, said forward and rear major surfaces being disposed to one another at an acute angle of approximately 25° to 30° in a vertical plane normal to said surfaces whereby the cross-section of said body in said plane is substantially triangular, the narrow cross-sectional top portion of said body constructed to be in contact with the shoulders of the wearer, and the broad cross-sectional bottom portion of said body constructed to be in contact with the lower back of the wearer, shoulder straps connected to said forward major surface for securing said body to the shoulders of said wearer, and, means connected to said external rear major surface for securing said load to said external rear major surface.
Claim 2
Dependent Claim
171 words
A separate back pack support for carrying a load on the back of a wearer which comprises in combination: a resilient cushion-like body having a substantially planar forward major surface constructed for contact with the back of the wearer, and a substantially planar external rear major surface constructed to be secured to the load, said forward and rear major surfaces being disposed to one another at an acute angle of approximately 25° to 30° in a vertical plane normal to said surfaces whereby the cross-section of said body in said plane is substantially triangular, the narrow cross-sectional top portion of said body constructed to be in contact with the shoulders of the wearer, and the broad cross-sectional bottom portion of said body constructed to be in contact with the lower back of the wearer, shoulder straps connected to said forward major surface for securing said body to the shoulders of said wearer, and, means connected to said external rear major surface for securing said load to said external rear major surface.
Claim 3
Dependent Claim
28 words
A back pack support in accordance with claim 1 wherein said cushion-like body comprises a slab of natural or synthetic foam rubber enclosed in a tight fitting skin.
Claim 4
Dependent Claim
21 words
The combination in accordance with claim 2 wherein said enclosing skin consists essentially of cloth formed of natural or synthetic fibers.
Claim 5
Dependent Claim
21 words
The combination in accordance with claim 2 wherein said enclosing skin consists essentially of a sheet of natural or synthetic rubber.
Claim 6
Dependent Claim
33 words
A back pack support in accordance with claim 1 wherein said cushion-like body comprises an outer skin stuffed with bits or chips of natural or synthetic foam rubber, or wads of fibrous material.
Claim 7
Dependent Claim
20 words
The combination in accordance with claim 5 wherein said enclosing skin consists essentially of cloth of natural or synthetic fibers.
Claim 8
Dependent Claim
21 words
The combination in accordance with claim 5 wherein said enclosing skin consists essentially of a sheet of natural or synthetic rubber.
Claim 9
Dependent Claim
24 words
A back pack support in accordance with claim 1 wherein said cushion-like body comprises a gas impervious outer skin closed except for a valve.
Claim 10
Dependent Claim
21 words
The combination in accordance with claim 8 wherein said body is filled with gas to a pressure substantially above atmospheric pressure.
Claim 11
Dependent Claim
32 words
The combination in accordance with claim 9 wherein said body is filled with gas at ambient temperature to a pressure of at least about 7 pounds per square inch above atmospheric pressure.
Claim 12
Dependent Claim
17 words
The combination in accordance with claim 9 wherein said gas consists essentially of oxygen suitable for breathing.
Claim 13
Dependent Claim
23 words
The combination in accordance with claim 8 wherein said gas impervious outer skin consists essentially of a sheet of natural or synthetic rubber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-15 | 1981-11-14 | 1982-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-15 | 1985-11-14 | 1986-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-15 | 1989-11-14 | 1990-05-16 | $7700.00 | Window Closed / Lapsed |