Patent US3780400A successfully refreshed from Google Patents.
US3780400A
Expired / Lapsed
US
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Fastener for flexible sheet material
Assignee: Individual
•
Filing: 1972-11-09
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Granted: 1973-12-25
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Expires: 1992-11-09
Abstract
Abstract A fastener for flexible sheet material, such as cloth, plastic sheeting, tarpaulins, and the like is disclosed. The fastener consists of an elongate cord member having enlarged or bulbous portions provided at spaced distances therealong, with one end of the cord having a flattened tab portion and an aperture thereon to receive the other end of the cord member which passes therethrough to form a loop portion. The said other end of the cord is then attached to a button member. In use, the button is positioned on one side of a sheet of material and the loop portion passed over the button from the other side of the sheet carrying a portion of the sheet material therewith. The tab is then moved along the cord to close the loop to a diameter smaller than the button and securely hold the fastener to the sheet material. The aperture in the tab portion is provided with a contiguous slot opening in which the cord is fitted after the loop is tightened. The slot is of a width to receive the cord but the width is less than the diameter of the enlarged portions to prevent longitudinal movement of the cord with respect to the slot. The fastener may be used with any flexible sheet material and is re-usable any number of times without damage to the sheet material.
Inventors
- 👤 C Hinsperger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:23
CPC Classifications
A; A44; A44B; A44B1/00; A44B1/18; A44B1/185; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1498; Y10T24/36; Y10T24/3689; Y10T24/44; Y10T24/44077; Y10T24/44248
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
A fastener for flexible sheet material comprising an elongate cord member, having a substantially constant diameter throughout a portion of its length, one end of the cord member being formed as a tab portion and the other end being adapted to be secured to a button member, the cord member being provided with enlarged portions spaced apart throughout a portion of its length, the said other end of the cord member passing through an aperture in the tab member to form a loop prior to the securement of the said other end to the button member, and there being a slot in the tab contiguous with the aperture, the slot being of a width to receive the cord member but being less than the size of the enlarged portions whereby any substantial longitudinal movement of the cord member is prevented when the cord member is positioned in the contiguous slot.
Claim 2
Dependent Claim
150 words
A fastener for flexible sheet material comprising an elongate cord member, having a substantially constant diameter throughout a portion of its length, one end of the cord member being formed as a tab portion and the other end being adapted to be secured to a button member, the cord member being provided with enlarged portions spaced apart throughout a portion of its length, the said other end of the cord member passing through an aperture in the tab member to form a loop prior to the securement of the said other end to the button member, and there being a slot in the tab contiguous with the aperture, the slot being of a width to receive the cord member but being less than the size of the enlarged portions whereby any substantial longitudinal movement of the cord member is prevented when the cord member is positioned in the contiguous slot.
Claim 3
Dependent Claim
85 words
A fastener according to claim 1, wherein the button member is provided with at least one aperture of a size to receive the said enlarged portions of the cord member, and there being a slot adjacent and contiguous with the said at least one aperture, the slot being of a width to receive the cord member but being less than the size of the enlarged portions to prevent longitudinal movement of the cord member with respect to the button member when positioned in the slot.
Claim 4
Dependent Claim
51 words
A fastener according to claim 2 wherein the button member is provided with two apertures each having contiguous slots, the cord member being secured to the button member by passing upwardly through one of the apertures and downwardly through the other of the apertures and being positioned in the contiguous slots.
Claim 5
Dependent Claim
40 words
A fastener according to claim 1, wherein the surfaces of the tab and button members adjacent the contiguous slots are concavely recessed or bevelled to snugly receive the enlarged portions when the cord member is positioned in the contiguous slots.
Claim 6
Dependent Claim
49 words
A fastener according to claim 4, wherein facing surfaces of adjacent enlarged portions are spaced apart a distance less than the thickness of the button member and tab portion whereby the facing surfaces are received in the said recesses provided on opposed surfaces of the tab and button members.
Claim 7
Dependent Claim
23 words
A fastener according to claim 5, wherein the enlarged portions are of generally spherical configuration and the concave recesses are of hemispherical configuration.
Claim 8
Dependent Claim
24 words
A fastener according to claim 5, wherein facing surfaces of adjacent enlarged portions are of conical configuration and the recesses are of conical configuration.
Claim 9
Dependent Claim
14 words
A fastener according to claim 1 wherein the cord member is made of polyethylene.
Claim 10
Dependent Claim
72 words
A fastener for flexible sheet material comprising an elongate cord member one end of which is formed having a tab portion, the other end of the cord member passing through an aperture provided in the tab member, and a button portion having a greater diameter than the aperture secured to the said other end, and means to removably attach the tab portion to the cord member at desired positions throughout its length.
Claim 11
Dependent Claim
72 words
A fastener for flexible sheet material comprising an elongate cord member one end of which is formed having a tab portion, the other end of the cord member passing through an aperture provided in the tab member, and a button portion having a greater diameter than the aperture secured to the said other end, and means to removably attach the tab portion to the cord member at desired positions throughout its length.
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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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |