US4368835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Back carrier
Assignee: Individual
•
Filing: 1980-11-21
•
Granted: 1983-01-18
•
Expires: 2000-11-21
Abstract
Abstract A back pack formed of spaced apart hollow tubular members open at the lower end where each support member receives a shaft with each of the shafts supporting an axle extending therefrom and a wheel on each axle.
Inventors
- 👤 Arthur D. Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:58
CPC Classifications
A; A45; A45F; A45F3/00; A45F3/04; A45F3/08; A45C; A45C5/00; A45C5/14; A45C5/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
In a back carrier of the type having two substantially parallel tubular support members adapted to be fitted generally vertically to the back of a person, said members having tubular lower ends, wherein the improvement comprises: two support shafts, each of said shafts inserted into the lower end of one of said support members; each of said shafts supporting an axle extending therefrom; two wheels, each rotatably mounted on one of said axles, means for securing said shafts in said members and means slidably mounted to at least one of said support shafts for engaging the wheel on said support shaft and preventing rotation thereof.
Claim 2
Dependent Claim
105 words
In a back carrier of the type having two substantially parallel tubular support members adapted to be fitted generally vertically to the back of a person, said members having tubular lower ends, wherein the improvement comprises: two support shafts, each of said shafts inserted into the lower end of one of said support members; each of said shafts supporting an axle extending therefrom; two wheels, each rotatably mounted on one of said axles, means for securing said shafts in said members and means slidably mounted to at least one of said support shafts for engaging the wheel on said support shaft and preventing rotation thereof.
Claim 3
Dependent Claim
21 words
The back carrier of claim 1 wherein said means for securing comprises a pin inserted through said shaft and said member.
Claim 4
Dependent Claim
24 words
The back carrier of claim 1 wherein said wheels are rotatable in a plane substantially orthogonal to a plane defined by said support members.
Claim 5
Dependent Claim
24 words
The back carrier of claim 1 wherein said slidably mounted means comprises a brake pin received in at least one of said support shafts.
Claim 6
Dependent Claim
114 words
A back carrier of the type having two substantially parallel tubular support members adapted to be fitted generally vertically to the back of a person, a pin extending into said members adjacent the lower ends thereof, shoulder straps, said shoulder straps having their lower ends attached to said pins, a shaft inserted into the lower end of each of said members, each of said shafts including an axle extending therefrom, a wheel rotatably mounted on each axle, said pins extending through said shafts and retaining said shafts in said members and means slidably mounted to at least one of said support shafts for engaging the wheel on said support shaft and preventing rotation thereof.
Claim 7
Dependent Claim
114 words
A back carrier of the type having two substantially parallel tubular support members adapted to be fitted generally vertically to the back of a person, a pin extending into said members adjacent the lower ends thereof, shoulder straps, said shoulder straps having their lower ends attached to said pins, a shaft inserted into the lower end of each of said members, each of said shafts including an axle extending therefrom, a wheel rotatably mounted on each axle, said pins extending through said shafts and retaining said shafts in said members and means slidably mounted to at least one of said support shafts for engaging the wheel on said support shaft and preventing rotation thereof.
Claim 8
Dependent Claim
24 words
The back carrier of claim 5 wherein said wheels are rotatable in a plane substantially orthogonal to the plane defined by said support members.
Claim 9
Dependent Claim
23 words
The back carrier of claim 5 wherein said slidable means comprises a brake pin received in at least one of said support shafts.
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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |