Patent US3774825A successfully refreshed from Google Patents.
US3774825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back pack for underwater breathing apparatus and the like
Assignee: LAXINETA
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Filing: 1972-07-31
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Granted: 1973-11-27
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Expires: 1992-07-31
Abstract
Abstract A pack for carrying compressed air or gas-filled cylinders on the back of a human body comprising a flat, rigid frame; first and second substantially U-shaped, rigid, shoulder engaging hangers pivotably connected to an upper portion of the frame; a hip or waist surrounding and engaging belt having disengagable belt portions and belt fastening means securing the belt portions together; and a rectangular fabric sheet connected between a lower portion of the frame and the belt. The upper end of the fabric sheet is connectable at any one of a plurality of positions along the frame with the remainder of the fabric sheet extending downwardly. The lower end of the fabric sheet is fixedly connected to the belt. Finally, any one of a plurality of intermediate positions along the fabric sheet is connectable at any one of a plurality of positions along the lower portion of the frame to adjust the overall length between the hangers and the belt and also the length between the belt and the selected position along the lower portion of the frame.
Inventors
- 👤 H Schone
- 👤 W Geer
- 👤 S Laxineta
- 👤 C Koistinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:08
CPC Classifications
A; A45; A45F; A45F3/00; A45F3/10; B; B63; B63C; B63C11/00; B63C11/02; B63C11/18; B63C11/22; B63C2011/2281; Y; Y10; Y10S; Y10S224/00; Y10S224/934
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
A pack for carriage on the back of a human body comprising: a rigid frAme having upper and lower portions; first and second substantially U-shaped, rigid, shoulder engaging hangers suspending said frame and connected to said upper portion thereof; a hip or waist surrounding and engaging belt having disengageable belt portions and belt fastening means securing said belt portions together; flexible suspension means having upper and lower ends, said lower end of said suspension means being fixedly connected to said belt; means for connecting said upper end of said suspension means to said frame at any one of a plurality of positions along said frame, said suspension means extending downwardly from said frame thereby tensioning said frame on said shoulders to prevent upward movement and disengagement of said hangers from said shoulders.
Claim 2
Dependent Claim
132 words
A pack for carriage on the back of a human body comprising: a rigid frAme having upper and lower portions; first and second substantially U-shaped, rigid, shoulder engaging hangers suspending said frame and connected to said upper portion thereof; a hip or waist surrounding and engaging belt having disengageable belt portions and belt fastening means securing said belt portions together; flexible suspension means having upper and lower ends, said lower end of said suspension means being fixedly connected to said belt; means for connecting said upper end of said suspension means to said frame at any one of a plurality of positions along said frame, said suspension means extending downwardly from said frame thereby tensioning said frame on said shoulders to prevent upward movement and disengagement of said hangers from said shoulders.
Claim 3
Dependent Claim
18 words
A back pack according to claim 1 wherein the inner and outer surfaces of said frame are flat.
Claim 4
Dependent Claim
39 words
A back pack according to claim 1 wherein said shoulder engaging hangers are pivotably connected to said upper portion of said frame to permit adjustment of the angle between said hangers and the vertical, longitudinal axis of said frame.
Claim 5
Dependent Claim
49 words
A back pack according to claim 3 wherein one arm of each of said hangers is longer than the other, wherein said longer arm is connected to said frame at two points along the length thereof, one of said points being fixed, the other of said points being variable.
Claim 6
Dependent Claim
26 words
A back pack according to claim 1 further comprising: bracket means secured to said frame for permitting connection thereto of one or two compressed air tanks.
Claim 7
Dependent Claim
86 words
A back pack according to claim 5 wherein said bracket means comprises: a pair of identical brackets, each of said brackets including a central section and opposite ends, said ends being connectable to said frame to hold said central section in spaced relationship relative thereto, said central section being disposed at an acute angle relative to said frame, said brackets being positionable with said central sections facing inwardly for support of a single air tank or facing outwardly fo support of a pair of air tanks.
Claim 8
Dependent Claim
40 words
A back pack according to claim 1 further comprising: means for connecting any one of a plurality of intermediate positions along said suspension means to said frame at any one of a plurality of positions along said lower portion thereof.
Claim 9
Dependent Claim
85 words
A back pack according to claim 7 wherein said flexible suspension means comprises a rectangular fabric sheet having a width substantially equal to the width of said frame, said sheet having first and second columns of holes along the opposite sides thereof, wherein said frame has first and second identical columns of holes along the opposite sides thereof, wherein said connecting means comprises: a plurality of fasteners extending through corresponding holes in said sheet and said frame for connection of said sheet to said frame.
Claim 10
Dependent Claim
59 words
A back pack according to claim 8 including four of said fasteners, two of said fasteners connecting the upper pair of holes in said sheet to a selected pair of said holes in said frame, the other two of said fasteners connecting any remaining pair of holes in said sheet to a corresponding pair of holes in said frame.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |