Patent US4137584A successfully refreshed from Google Patents.
US4137584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insect and reptile barrier for outdoorsmen
Assignee: Individual
•
Filing: 1977-10-03
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Granted: 1979-02-06
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Expires: 1997-10-03
Abstract
Abstract A ground cloth mounted barrier extending around an occupant in a sleeping bag shields the occupant from reptiles and crawling insects. The barrier, being of smooth surfaced material, such as vinyl plastic, precludes a sufficient gripping surface for the insects and the reptiles to permit them to traverse the barrier. The underlying ground cloth shields against intrusion beneath the barrier or from the ground from within the barrier. A peripheral smooth surfaced section of the ground cloth extending lateral to the barrier further discourages intrusion of reptiles by providing a large span over which they cannot obtain a grip.
Inventors
- 👤 Norman G. Sharber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:13
CPC Classifications
A; A47; A47C; A47C29/00; A47C29/006; A47G; A47G9/00; A47G9/06; A47G9/062
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
132 words
Apparatus for protecting an occupant within a predetermined area against intrusion by crawling insects and reptiles, said apparatus comprising in combination: a. a ground cloth for supporting the occupant, said ground cloth having a perimeter defining the predetermined area; b. an inflatable smooth surfaced barrier of vinyl plastic secured to said ground cloth in proximity to the perimeter of said ground cloth for establishing an encircling enclosure about the occupant; c. said barrier including a smoothly curved outer lateral wall having a smooth surface devoid of surface discontinuities for preventing crawling insects and reptiles from obtaining sufficient traction to traverse said barrier; whereby, said smooth surface outer lateral wall, in combination with the vertical height presented by said outer lateral wall, inhibits passage of crawling insects and reptiles within the predetermined area.
Claim 2
Dependent Claim
132 words
Apparatus for protecting an occupant within a predetermined area against intrusion by crawling insects and reptiles, said apparatus comprising in combination: a. a ground cloth for supporting the occupant, said ground cloth having a perimeter defining the predetermined area; b. an inflatable smooth surfaced barrier of vinyl plastic secured to said ground cloth in proximity to the perimeter of said ground cloth for establishing an encircling enclosure about the occupant; c. said barrier including a smoothly curved outer lateral wall having a smooth surface devoid of surface discontinuities for preventing crawling insects and reptiles from obtaining sufficient traction to traverse said barrier; whereby, said smooth surface outer lateral wall, in combination with the vertical height presented by said outer lateral wall, inhibits passage of crawling insects and reptiles within the predetermined area.
Claim 3
Dependent Claim
21 words
The apparatus as set forth in claim 1 wherein said barrier is inflatable to a height of at least three inches.
Claim 4
Dependent Claim
15 words
The apparatus as set forth in claim 1 wherein said barrier is circular in cross-section.
Claim 5
Dependent Claim
27 words
The apparatus as set forth in claim 1 including a peripheral smooth surfaced section extending laterally about said barrier for increasing the span of smooth surfaced material.
Claim 6
Dependent Claim
21 words
The apparatus as set forth in claim 4 wherein said barrier is inflatable to a height of at least three inches.
Claim 7
Dependent Claim
15 words
The apparatus as set forth in claim 4 wherein said barrier is circular in cross-section.
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) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |