US4404778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal strip for preventing invasion
Assignee: Decol Co Ltd
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Filing: 1981-04-14
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Granted: 1983-09-20
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Expires: 2001-04-14
Abstract
Abstract A barbed metal tape or strip for preventing invasion of any bird, animal or unauthorized person into a building, or the like comprises a multiplicity of V-shaped projections extending from its surface substantially perpendicularly thereto, and positioned close to one another so that a force acting on the strip may be uniformly distributed on the projections. It is extremely effective for crime prevention, maintenance of safety, protection of buildings, etc., and easy to install.
Inventors
- 👤 Chuji Ushimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:07
CPC Classifications
A; A01; A01M; A01M29/00; A01M29/30; A01M29/32; E; E04; E04B; E04B2/00; E04D; E04D13/00; E04D13/004; E04H; E04H17/00; E04H17/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
216 words
A metal strip for preventing invasion comprising a metal strip having a surface formed with a multiplicity of V-shaped projections extending from said surface substantially perpendicular thereto and positioned close to one another, whereby a force acting on said projections is distributed uniformly thereon, said projections 2 comprise four kinds of projections each lying in a row transversely of said strip 1, and provided alternately to one another longitudinally of said strip 1, said rows being equally spaced apart from one another, said projections being substantially equally spaced apart from one another in each row, two of said four kinds of projections, 2a and 2b, being separated from each other by another kind of projections, and having each a base extending in parallel to the longitudinal edges of said strip 1, the other two kinds of projections 2c and 2d each having a base which is perpendicular to said longitudinal edges of said strip, each of said projection 2a having its base located substantially in a line in which the bases of said projections 2c and 2d lie, said projections 2a and 2b being formed by two kinds of oppositely directed cuts in said strip 1, while the other projections 2c and 2d are likewise formed by two kinds of oppositely directed cuts in said strip.
Claim 2
Dependent Claim
216 words
A metal strip for preventing invasion comprising a metal strip having a surface formed with a multiplicity of V-shaped projections extending from said surface substantially perpendicular thereto and positioned close to one another, whereby a force acting on said projections is distributed uniformly thereon, said projections 2 comprise four kinds of projections each lying in a row transversely of said strip 1, and provided alternately to one another longitudinally of said strip 1, said rows being equally spaced apart from one another, said projections being substantially equally spaced apart from one another in each row, two of said four kinds of projections, 2a and 2b, being separated from each other by another kind of projections, and having each a base extending in parallel to the longitudinal edges of said strip 1, the other two kinds of projections 2c and 2d each having a base which is perpendicular to said longitudinal edges of said strip, each of said projection 2a having its base located substantially in a line in which the bases of said projections 2c and 2d lie, said projections 2a and 2b being formed by two kinds of oppositely directed cuts in said strip 1, while the other projections 2c and 2d are likewise formed by two kinds of oppositely directed cuts in said strip.
Claim 3
Dependent Claim
98 words
An animal repellant structure adaptable for quick attachment to window ledges and the like and comprising: a sheet metal strip having first and second surfaces and plural elements, said plural elements having pointed ends projecting outwardly from said first surface in a generally perpendicular direction to provide a tactile repellent; and removable protection means for disabling said tactile repellent such that a person may apply pressure, in a direction opposite of that in which the pointed ends project, during application of said strip to said support and may subsequently remove said protection means to enable said tactile repellant.
Claim 4
Dependent Claim
98 words
An animal repellant structure adaptable for quick attachment to window ledges and the like and comprising: a sheet metal strip having first and second surfaces and plural elements, said plural elements having pointed ends projecting outwardly from said first surface in a generally perpendicular direction to provide a tactile repellent; and removable protection means for disabling said tactile repellent such that a person may apply pressure, in a direction opposite of that in which the pointed ends project, during application of said strip to said support and may subsequently remove said protection means to enable said tactile repellant.
Claim 5
Dependent Claim
70 words
An animal repellent as in claim 2, including attachment means, said means comprising: a tape coated on both sides with an adhesive, one adhesive side of which is adhered to said second surface, the other adhesive side of which is covered by a removable protective liner, such that said liner may be removed and said other adhesive side may be adhered to a support for attachment of said strip thereto.
Claim 6
Dependent Claim
26 words
A structure as in claim 2, wherein at least said elements of said structure are polished to provide a visual repellent when light is reflected therefrom.
Claim 7
Dependent Claim
40 words
A structure as in claim 2, wherein said elements comprise a strip-to-pointed end height and said protection means comprises: a foamed synthetic resin-like material substantially covering said first surface and having a thickness at least as great as said height.
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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |