US3620428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Convertible backpack and cot apparatus
Assignee: Individual
•
Filing: 1970-06-08
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Granted: 1971-11-16
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Expires: 1990-06-08
Abstract
Abstract Convertible backpack and cot apparatus including a breakdown, rectangularly shaped, tubular cot frame including first and second pairs of frame elbow members forming the corners thereof and first and second pairs of tee devices connectable with the ends of the side runs of such elbow members. Side members connect on their opposite ends with the tee devices and crossmembers connect on their opposite ends with the confronting end runs of the elbow members. First and second U-shaped leg means are provided for connection on their opposite ends with the respective first and second pairs of tee devices and include respective pairs of leg elbow members which have their horizontal runs connected together by horizontal members. Thus, the cot frame may be assembled with a cot canvas stretched thereon and when camp is broken the cot frame may be knocked down and one pair of elbow members connected together on their respective one ends to form one end of a pack frame and the first pair of the devices connected to the opposite end of such one pair of elbow members, the horizontal members connected on their respective one ends with such first tee devices and the second pair of tee devices connected with the opposite ends of the horizontal members. A second pair of elbows may then be connected together on their respective one ends and connected on their respective opposite ends with the second pair of tee devices to form a backpack frame that is narrower in width than the cot frame.
Inventors
- 👤 John D Silverthorne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:02
CPC Classifications
A; A45; A45F; A45F4/00; A45F4/02; A45F4/06; A45F3/00; A45F3/04; A45F3/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
274 words
Convertible backpack and cot apparatus comprising: a breakdown rectangularly shaped tubular cot frame of predetermined width and including first and second pairs of frame elbow members forming the corners of said frame, first and second pairs of tee devices connectable with the side runs of said elbows, side member means connectable on their opposite ends with said tee devices; and first and second U-shaped leg means including respective pairs of leg elbow members, first and second coupling members connectable on their respective opposite ends with the first and second pairs of leg elbow members, said leg means being connectable on their respective opposite ends with the respective first and second pairs of tee devices whereby said cot frame may be assembled for receipt of a cot sheet and said leg means secured thereto to support said frame elevated from the ground and when camp is broken said cot frame and leg means may be disassembled and pair of elbow members connected together on their respective one ends to form one end of a backpack frame, said first pair of tee devices connected to the opposite ends of said one pair of elbow members, said leg coupling members connected on their respective one ends with said first tee devices to form the sides of said backpack frame, said second pair of tee devices connected with the opposite ends of said coupling members, a pair of said frame elbows connected together on their respective one ends and connected on their respective opposite ends with said second pair of tee devices, and the backpack frame secured together for conveniently being carried on the back of a hiker.
Claim 2
Dependent Claim
274 words
Convertible backpack and cot apparatus comprising: a breakdown rectangularly shaped tubular cot frame of predetermined width and including first and second pairs of frame elbow members forming the corners of said frame, first and second pairs of tee devices connectable with the side runs of said elbows, side member means connectable on their opposite ends with said tee devices; and first and second U-shaped leg means including respective pairs of leg elbow members, first and second coupling members connectable on their respective opposite ends with the first and second pairs of leg elbow members, said leg means being connectable on their respective opposite ends with the respective first and second pairs of tee devices whereby said cot frame may be assembled for receipt of a cot sheet and said leg means secured thereto to support said frame elevated from the ground and when camp is broken said cot frame and leg means may be disassembled and pair of elbow members connected together on their respective one ends to form one end of a backpack frame, said first pair of tee devices connected to the opposite ends of said one pair of elbow members, said leg coupling members connected on their respective one ends with said first tee devices to form the sides of said backpack frame, said second pair of tee devices connected with the opposite ends of said coupling members, a pair of said frame elbows connected together on their respective one ends and connected on their respective opposite ends with said second pair of tee devices, and the backpack frame secured together for conveniently being carried on the back of a hiker.
Claim 3
Dependent Claim
92 words
Convertible backpack and cot apparatus as set forth in claim 1 wherein: said side member means includes two pairs of side members on each side of said frame, a third pair of tee devices for connecting the adjacent ends of each said pair of side members together; and said apparatus includes third leg means including first and second elbow members connected on their respective one ends to said third pair of tee devices and a third leg coupling member connectable on its opposite extremities to the adjacent extremities of said elbow members.
Claim 4
Dependent Claim
92 words
Convertible backpack and cot apparatus as set forth in claim 1 wherein: said side member means includes two pairs of side members on each side of said frame, a third pair of tee devices for connecting the adjacent ends of each said pair of side members together; and said apparatus includes third leg means including first and second elbow members connected on their respective one ends to said third pair of tee devices and a third leg coupling member connectable on its opposite extremities to the adjacent extremities of said elbow members.
Claim 5
Dependent Claim
46 words
Convertible backpack and cot apparatus as set forth in claim 1 wherein: said first pair of said tee devices includes a pair of all male tees and said second pair of tee devices includes a pair of tees having two male branches and a female branch.
Claim 6
Dependent Claim
28 words
Convertible backpack and cot apparatus as set forth in claim 1 that includes: a cot sheet formed on its peripheries with passages for receipt of said cot frame.
Claim 7
Dependent Claim
48 words
Convertible backpack and cot apparatus as set forth in claim 1 wherein: said elbow members of said second leg means are formed on their respective one extremities for connection with said second pair of tee devices to form rearwardly projecting prongs at the bottom of said backpack frame.
References Cited (Backward Citations)
US1080577A
Cited
US2964222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |