Patent US4751936A successfully refreshed from Google Patents.
US4751936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable field blind
Assignee: RED WING OUTDOOR INNOVATORS Inc
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Filing: 1987-04-20
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Granted: 1988-06-21
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Expires: 2007-04-20
Abstract
Abstract A hunting blind comprising an elongated frame assembly of sufficient length to extend over a hunter lying under the blind incorporates a pivotal canopy frame with ground engaging, side support flaps. The canopy frame is hingedly connected to one end of a top frame segment of a base frame supported on foldable legs. An elongated spring is connected between the canopy frame and the base frame. A hunter lying under the frame assembly may exert slight upward force on the canopy frame as he sits up, so as to thereby cause the spring to rapidly pull the canopy frame to an open position over the top frame segment. An unobstructed field of vision and fire is thus presented to the hunter as he sits up.
Inventors
- 👤 Thomas L. Zibble
- 👤 William W. Habedank
- 👤 Lowell E. Warnsholz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:04
CPC Classifications
A; A01; A01M; A01M31/00; A01M31/02; A01M31/025; E; E04; E04H; E04H15/00; E04H15/001; Y; Y10; Y10S; Y10S135/00; Y10S135/901
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
206 words
A hunting blind comprising: a base frame comprising a top frame segment attached to ground engaging members for support at an elevated horizontal position above the ground or other support surface; a canopy frame pivotally attached to said base frame for swinging movement about an horizontal pivot axis between a fully extended, generally horizontal covering position extending from said base frame and substantially coplaner with said top frame, and an open position extending in overlying relation to said top frame, said canopy frame having ground engaging members attached thereto, whereby said canopy frame may be supported at an elevated position, said top frame segment of said base frame and said canopy frame forming together an elongated frame assembly of sufficient length to extend over the height of a hunter lying thereunder when said canopy frame is swung to said covering position; and spring means connected between said canopy frame and said base frame, said spring means being placed in tension when said canopy frame is swung to said covering position, said spring means exerting a reaction force acting to pull said canopy to said open position in response to the upward movement of said canopy frame about said pivot axis to a predetermined spring return position.
Claim 2
Dependent Claim
206 words
A hunting blind comprising: a base frame comprising a top frame segment attached to ground engaging members for support at an elevated horizontal position above the ground or other support surface; a canopy frame pivotally attached to said base frame for swinging movement about an horizontal pivot axis between a fully extended, generally horizontal covering position extending from said base frame and substantially coplaner with said top frame, and an open position extending in overlying relation to said top frame, said canopy frame having ground engaging members attached thereto, whereby said canopy frame may be supported at an elevated position, said top frame segment of said base frame and said canopy frame forming together an elongated frame assembly of sufficient length to extend over the height of a hunter lying thereunder when said canopy frame is swung to said covering position; and spring means connected between said canopy frame and said base frame, said spring means being placed in tension when said canopy frame is swung to said covering position, said spring means exerting a reaction force acting to pull said canopy to said open position in response to the upward movement of said canopy frame about said pivot axis to a predetermined spring return position.
Claim 3
Dependent Claim
94 words
An hunting blind as defined in claim 1 wherein: said spring means comprises an elongated spring member secured between the end portion of said canopy frame most remote from said base frame and the opposite, end portion of said base frame, said spring member exerting a tension force on said canopy frame serving to rapidly pull said canopy frame toward said base frame about said pivot axis to said open position in response to very slight upward movement of said canopy frame about said pivot axis moving said spring member to said return position.
Claim 4
Dependent Claim
18 words
An hunting blind as defined in claim 2 wherein: said spring member is a flexible, elongated elastic strap.
Claim 5
Dependent Claim
104 words
An hunting blind as defined in claim 2 wherein: said spring member is releasably secured to the end extremity of said top frame segment of said base frame farthest from said canopy frame, and thereby serves to swing said canopy frame through substantially a 180 degree arc into overlying engagement with said top frame segment in response to upward force on said canopy frame, whereby a full, unobstructed field of fire and view is presented to the hunter as he rises to a sitting position while simultaneously exerting said upward force on said canopy frame to move said spring member to said return position.
Claim 6
Dependent Claim
76 words
An hunting blind as defined in claim 1 wherein: said pivot axis is defined by an hinge connection between said canopy frame and said top frame segment at a location generally coinciding with the midthigh area of a hunter lying under said elongated frame assembly with his head and upper torso under said canopy frame, whereby the hunter may rise to a full sitting position for shooting as said canopy frame swings to said open position.
Claim 7
Dependent Claim
62 words
An hunting blind as defined in claim 1 wherein: said ground engaging members of said base frame comprise a plurality of legs hingedly attached to said top frame segment for folding movement from a collapsed position in close proximity to said top frame segment to a fully extended, generally upright position for support of said top frame segment at said elevated position.
Claim 8
Dependent Claim
40 words
An hunting blind as defined in claim 6 wherein: each of said foldable legs of said base frame has a stakelike end portion which may be pushed into the ground for secure retention of said base frame in the field.
Claim 9
Dependent Claim
58 words
An hunting blind as defined in claim 1 wherein: said ground engaging members attached to said canopy frame comprise a pair of rigid side flaps swingably mounted on opposite sides of said canopy frame, whereby each of said side flaps may be swung outwardly and downwardly from collapsed positions against said canopy frame to generally upright, ground-engaging positions.
Claim 10
Dependent Claim
39 words
An hunting blind as defined in claim 8 wherein: each of said side flaps comprises a frame segment having a pair of generally parallel legs swingably secured at their upper ends to side rod segments of said canopy frame.
Claim 11
Dependent Claim
33 words
An hunting blind as defined in claim 9 wherein: each of said side flaps is of generally U-shaped configuration and comprises a rigid, ground-engaging segment extending between said swingably mounted side flap legs.
Claim 12
Dependent Claim
98 words
An hunting blind as defined in claim 9 wherein: at least one guide stop member is secured to said side rod segments of said canopy frame and depends therefrom in underlying, supporting engagement with one of said side flap legs when said side flap legs are in said generally upright, ground-engaging position, whereby when said canopy frame is swung to said open position said guide stop members will deflect said side flap legs outwardly and downwardly away from said top frame segment, thereby ensuring an unobstruccted field of fire over said top frame segment of said base frame.
Claim 13
Dependent Claim
105 words
An hunting blind as defined in claim 11 wherein: each of said guide stop members has a generally U-shape defined by two arms connected at their outer ends by a base member, said arms being secured at their inner ends to one of said side rod segments of said canopy frame on opposite sides of the point of swingable attachment of said side flap legs thereto, whereby said stop member arms prevent the sliding movement of said side flap legs along said side rod segments of said canopy frame, and said base member acts as a stop support and deflector for said side flap legs.
Claim 14
Dependent Claim
24 words
An hunting blind as defined in claim 1 wherein: a foldable camouflage cover is removably secured over said base frame and said canopy frame.
Claim 15
Dependent Claim
26 words
An hunting blind as defined in claim 13 wherein: said camouflage cover has openings therein through which the hunter may see out from under said blind.
Claim 16
Dependent Claim
47 words
An hunting blind as defined in claim 13 wherein: said camouflage cover is secured to said base frame and to said canopy frame by flexible fastener ties inserted through openings in said camouflage cover and fastened around frame members of said base frame and said canopy frame.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |