Patent US3693849A successfully refreshed from Google Patents.
US3693849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination back pack and pack sled
Assignee: Individual
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Filing: 1971-09-30
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Granted: 1972-09-26
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Expires: 1991-09-30
Abstract
Abstract A structure including telescoping sections each having sled-like side rails and a flat center portion, one of which sections has an upwardly curved toboggan-like front end with a curvature corresponding with the curvature of the leading edges of the side rails, the structure being adapted to be carried on a person''s back by use of shoulder straps when in a closed configuration, and to be used to carry a load in the form of a sled through snow and ice when in an open configuration.
Inventors
- 👤 Melvin K Knabenbauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:05
CPC Classifications
B; B62; B62B; B62B13/00; A; A45; A45F; A45F3/00; A45F3/04; A45F3/08; A45F4/00; A45F4/02; A45F4/10; B62B2206/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
241 words
A combination back pack and pack sled apparatus, comprising: a first rigid section having a relatively flat portion with upper and lower broad surfaces as well as parallel sides and front and rear ends, said front end being curved upwardly toboggan-like and one of a pair of parallel side rail portions being disposed below said flat portion along each of said sides, the leading edges of said side rail portions being curved to conform to the curvature of said front end; a second rigid section having a relatively flat portion with upper and lower broad surfaces as well as parallel sides and front and rear ends, one of a pair of parallel side rail portions being disposed below said second section flat portion along each of its sides, the leading edges of said second section side rail portions being curved to conform to the curvature of said leading edges of said first section side rail portions; adjustable section locating means cooperating with said first and second sections for holding said sections in any desired overlapping telescoping relationship whereby said respective flat portions and side rail portions are adjacent and parallel to each other, the depth dimension of said side rail portions being such that the lower edges thereof are in a common plane parallel to said flat portions; and carrying means including shoulder straps coupled to at least one of said rigid sections for transporting said apparatus on a person''s back.
Claim 2
Dependent Claim
241 words
A combination back pack and pack sled apparatus, comprising: a first rigid section having a relatively flat portion with upper and lower broad surfaces as well as parallel sides and front and rear ends, said front end being curved upwardly toboggan-like and one of a pair of parallel side rail portions being disposed below said flat portion along each of said sides, the leading edges of said side rail portions being curved to conform to the curvature of said front end; a second rigid section having a relatively flat portion with upper and lower broad surfaces as well as parallel sides and front and rear ends, one of a pair of parallel side rail portions being disposed below said second section flat portion along each of its sides, the leading edges of said second section side rail portions being curved to conform to the curvature of said leading edges of said first section side rail portions; adjustable section locating means cooperating with said first and second sections for holding said sections in any desired overlapping telescoping relationship whereby said respective flat portions and side rail portions are adjacent and parallel to each other, the depth dimension of said side rail portions being such that the lower edges thereof are in a common plane parallel to said flat portions; and carrying means including shoulder straps coupled to at least one of said rigid sections for transporting said apparatus on a person''s back.
Claim 3
Dependent Claim
48 words
The apparatus according to claim 1, wherein said section locating means includes a series of associated holes along each of said side rail portions and also includes attachment elements extending through at least two matching ones of said holes in each of the two adjacent side rail portions.
Claim 4
Dependent Claim
17 words
The apparatus according to claim 2, wherein said attachment elements include threaded bolts and associated wing nuts.
Claim 5
Dependent Claim
26 words
The apparatus according to claim 1, wherein said first rigid section also includes a ridge extending above said upper broad surface along each of said sides.
Claim 6
Dependent Claim
19 words
The apparatus according to claim 4, wherein each of said ridges includes a plurality of holes extending transversally therethrough.
Claim 7
Dependent Claim
27 words
The apparatus according to claim 2, wherein a cord is laced through said series of associated holes between said side rail portions as a back support structure.
Claim 8
Dependent Claim
24 words
An apparatus according to claim 1, also including a fabric pouch attached to said first section upper surface adjacent said upwardly curved front end.
Claim 9
Dependent Claim
42 words
An apparatus according to claim 7, wherein said pouch includes top and bottom portions, said bottom portion being within the curvature of said front end, and said top portion including an opening lid and a fastening arrangement to hold said lid closed.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |