US3762000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of a continuous molded plastic strip
Assignee: Velcro Industries BV
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Filing: 1971-11-11
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Granted: 1973-10-02
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Expires: 1991-11-11
Abstract
Abstract A continuous molded plastic strip is produced using mold plates which have cavities therein for molding upstanding members or pile-like formations when moldable plastic material is applied under suitable pressure. Thereafter, plastic material is applied to the exposed ends of the pile-like formations while still in the cavities and a strip constituting a base member is formed having the pile-like protuberances integrally attached. In addition to the apparatus a special method is proposed for producing the upstanding formations or members integrally attached to the base member. Certain related products are also proposed including a special form of hook member.
Inventors
- 👤 M Menzin
- 👤 Soon Rhee Sang
- 👤 J Blanz
- 👤 A Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:43
CPC Classifications
A; A44; A44B; A44B18/00; A44B18/0046; A44B18/0049; Y; Y10; Y10S; Y10S24/00; Y10S24/907; Y10S425/00; Y10S425/805; Y10S425/814; Y10T; Y10T24/00; Y10T24/27; Y10T24/2792
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
172 words
A molded plastic structure for use as one member of a separable fastener the other member of which includes a base and a multiplicity of pile-like hooking elements upstanding from the base, said structure comprising: a. an elongated strip of plastic material defining a base; and b. a multiplicity of complementary pile-like hooking elements releasably interengageable with said first mentioned hooking elements and integrally upstanding from said base strip, each of said complementary hooking elements having a stem and a laterally directed hooking portion extending from the stem for engagement with said first mentioned hooking elements, said hooking portion having: 1. a first substantially flat surface lying in a first plane oriented substantially perpendicular to said base strip, said hooking portion lying entirely on one side of said first plane; and 2. a second substantially flat surface lying in a second plane sloping away from said first plane in intersecting relationship thereto, said second surface functioning to cam the respective hooking element out of a mold cavity in which it is formed.
Claim 2
Dependent Claim
172 words
A molded plastic structure for use as one member of a separable fastener the other member of which includes a base and a multiplicity of pile-like hooking elements upstanding from the base, said structure comprising: a. an elongated strip of plastic material defining a base; and b. a multiplicity of complementary pile-like hooking elements releasably interengageable with said first mentioned hooking elements and integrally upstanding from said base strip, each of said complementary hooking elements having a stem and a laterally directed hooking portion extending from the stem for engagement with said first mentioned hooking elements, said hooking portion having: 1. a first substantially flat surface lying in a first plane oriented substantially perpendicular to said base strip, said hooking portion lying entirely on one side of said first plane; and 2. a second substantially flat surface lying in a second plane sloping away from said first plane in intersecting relationship thereto, said second surface functioning to cam the respective hooking element out of a mold cavity in which it is formed.
Claim 3
Dependent Claim
40 words
a second substantially flat surface lying in a second plane sloping away from said first plane in intersecting relationship thereto, said second surface functioning to cam the respective hooking element out of a mold cavity in which it is formed.
Claim 4
Dependent Claim
40 words
a second substantially flat surface lying in a second plane sloping away from said first plane in intersecting relationship thereto, said second surface functioning to cam the respective hooking element out of a mold cavity in which it is formed.
Claim 5
Dependent Claim
26 words
The molded structure according to claim 1 wherein said second flat surface is disposed on the end portion of the hooking portion of each hooking element.
Claim 6
Dependent Claim
8 words
said second flat surface is triangular in shape.
Claim 7
Dependent Claim
8 words
said second flat surface is triangular in shape.
Claim 8
Dependent Claim
30 words
The molded structure according to claim 2 wherein each of said complementary hooking elements has a generally hook-shaped configuration with the hook portion thereof defining a generally arcuate hooking surface.
Claim 9
Dependent Claim
41 words
The molded structure according to claim 3 wherein the stem of each hooking element includes a plurality of flat sides with each of said flat sides continuing in a smooth curve into and throughout the hook portion of each hooking element.
Claim 10
Dependent Claim
25 words
The molded structure according to claim 4 wherein one of said flat sides of the stem lies in a plane coincident with said first plane.
Claim 11
Dependent Claim
8 words
The molded structure according to claim 5 wherein:
Claim 12
Dependent Claim
56 words
A molded plastic product according to claim 6 wherein the hooking elements are disposed in closely spaced rows with the hook portion of each hooking element arranged generally in line with the row and with the hook portions of the hooking elements disposed in alternate rows disposed in generally opposite directions with respect to each other.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |