← Back to Patent Explorer
US3571972A Expired / Lapsed US ⏱️ 0.0 years remaining

Protective ground collar

Assignee: Individual
•
Filing: 1969-02-28
•
Granted: 1971-03-23
•
Expires: 1989-02-28
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract For enveloping upright elements such as trees, posts and the like at ground level to inhibit the growth of vegetation, a collar is formed of flexible water resistant sheet material and a main opening is formed therein from which a main slit extends to the outer edge of the sheet of material, the main slit being for the purpose of facilitating envelopment of a tree trunk and the like. A plurality of radial inner slits are formed in the sheet and extend outwardly from the central opening to define a plurality of flexible fingers which are disposed against the tree trunk or post to inhibit plant growth. Preferably the sheet is of laminated construction and the inner slits are formed in such manner that the fingers formed in the two laminated sheets are disposed in staggered relationship and the main slits in the two sheets are disposed out of coincidence with each other.

Inventors

  • 👤 William J Carter Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:13
CPC Classifications
A; A01; A01G; A01G13/00; A01G13/30; A01G13/31; E; E01; E01F; E01F15/00; E01F15/02; E01F15/04; E01F15/0461; E01F15/0469

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 89 words
A ground collar for enveloping the trunk of a growing plant comprising a generally flat flexible sheet having a slit therein extending from its outer periphery inward to accommodate placement of the collar about the plant trunk at ground level, a first series of radially disposed fingers formed in said sheet and arranged to envelop the plant trunk, and a second series of radially disposed fingers formed in said sheet and in overlying relation with said first series and covering the spaces between the fingers of said first series.
Claim 2
Dependent Claim 89 words
A ground collar for enveloping the trunk of a growing plant comprising a generally flat flexible sheet having a slit therein extending from its outer periphery inward to accommodate placement of the collar about the plant trunk at ground level, a first series of radially disposed fingers formed in said sheet and arranged to envelop the plant trunk, and a second series of radially disposed fingers formed in said sheet and in overlying relation with said first series and covering the spaces between the fingers of said first series.
Claim 3
Dependent Claim 118 words
A ground collar for enveloping the trunk of a growing plant and comprising a pair of flexible weather resistant generally coincidental sheets disposed in flat face contacting relation to each other, a main slit formed in each of said sheets and extending from the outer edges thereof inwardly to accommodate placement of the collar about a plant trunk, said main slits being disposed out of coincidence with each other, and a plurality of internal slits formed in each of said sheets and defining therebetween a plurality of yieldable fingers for disposition about the trunk of a plant, the fingers in one sheet being disposed in generally overlying relation with respect to the internal slits in the other sheet.
Claim 4
Dependent Claim 118 words
A ground collar for enveloping the trunk of a growing plant and comprising a pair of flexible weather resistant generally coincidental sheets disposed in flat face contacting relation to each other, a main slit formed in each of said sheets and extending from the outer edges thereof inwardly to accommodate placement of the collar about a plant trunk, said main slits being disposed out of coincidence with each other, and a plurality of internal slits formed in each of said sheets and defining therebetween a plurality of yieldable fingers for disposition about the trunk of a plant, the fingers in one sheet being disposed in generally overlying relation with respect to the internal slits in the other sheet.
Claim 5
Dependent Claim 21 words
A device according to claim 2 wherein at least one of said sheets is formed of felt impregnated with polyurethane resin.
Claim 6
Dependent Claim 90 words
A device according to claim 2 wherein the outer peripheries of the two sheets are substantially circular and wherein the upper sheet is of smaller diameter than the lower sheet and wherein a grommetlike third sheet having an internal diameter substantially equal to the outer diameter of the upper one of said two sheets is disposed in coincidental relationship to said two sheets so as to overlie the outer portion of the larger one of said two sheets, said third sheet having a radial slit and a covering flap therefor.
Claim 7
Dependent Claim 191 words
A protective device for upright elements comprising a first flexible sheet having an aperture formed therein in spaced relation to the edges thereof, said aperture being somewhat smaller than the element, a main slit formed in said first sheet and extending from the outer edge thereof to said aperture, a plurality of inner slits formed in said first sheet and extending radially outward from said aperture and defining therebetween a plurality of yieldable fingers for enveloping the element, a second flexible sheet having an aperture formed therein, said second sheet being disposed in flat face contacting relation to said first sheet and with said apertures arranged in general coincidence with each other, a main slit formed in said second sheet and extending from the aperture therein to the outer edge thereof, and a plurality of inner slits formed in said second sheet and extending outwardly from the aperture therein to define a plurality of yieldable fingers therebetween, the fingers of one of said sheets being disposed in staggered relation relative to the fingers of the other sheet so as substantially to cover the spaces between the fingers of the other sheet.
Claim 8
Dependent Claim 191 words
A protective device for upright elements comprising a first flexible sheet having an aperture formed therein in spaced relation to the edges thereof, said aperture being somewhat smaller than the element, a main slit formed in said first sheet and extending from the outer edge thereof to said aperture, a plurality of inner slits formed in said first sheet and extending radially outward from said aperture and defining therebetween a plurality of yieldable fingers for enveloping the element, a second flexible sheet having an aperture formed therein, said second sheet being disposed in flat face contacting relation to said first sheet and with said apertures arranged in general coincidence with each other, a main slit formed in said second sheet and extending from the aperture therein to the outer edge thereof, and a plurality of inner slits formed in said second sheet and extending outwardly from the aperture therein to define a plurality of yieldable fingers therebetween, the fingers of one of said sheets being disposed in staggered relation relative to the fingers of the other sheet so as substantially to cover the spaces between the fingers of the other sheet.
Claim 9
Dependent Claim 18 words
A device according to claim 5 wherein said main slits are disposed in staggered relation to each other.
Claim 10
Dependent Claim 25 words
A device according to claim 5 wherein said fingers are secured in snugly enveloping relationship to said upright element by a friction element disposed thereabout.

References Cited (Backward Citations)

US104418A Cited
US1931602A Cited
FR783798A Cited
US2978837A Cited
US2999479A Cited
US3305969A Cited
CH462525A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-03-22 1974-09-21 1975-03-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-03-22 1978-09-21 1979-03-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-03-22 1982-09-21 1983-03-23 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag