Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Each mating member having similarly shaped – sized – and...
Reexamination Certificate
1999-09-10
2001-04-24
Sakran, Victor N. (Department: 3626)
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Each mating member having similarly shaped, sized, and...
C024S170000, C024S615000, C024S625000, C024S634000
Reexamination Certificate
active
06219889
ABSTRACT:
DESCRIPTION
The present invention relates to an adjustable clasp device comprising a retainer body provided with an elongate cavity for sliding of a strap having saw teeth, in which the retainer body and the strap are intended to be connected with associated elements to be joined together, the retainer body including a generally non-deformable main portion from which extends a flexible tongue provided with pawl means projecting into the said cavity and engageable with the teeth of the strap to prevent relative sliding of the retainer body and the strap, and at least one resilient wing arranged alongside the flexible tongue and operable under pressure to disengage the pawl means from the teeth of the strap, the retainer body having first guide members at the said main portion and second guide members in proximity with the end of the retainer body opposite its main portion, such guide members being intended to maintain the strap in a position in which its teeth are close to the pawl means.
In adjustable clasp devices of the known type defined above, the retainer body has a rigid structure with an intermediate part from which the said flexible tongue with the pawl means projects, and a pair of resilient wings. The rigid structure includes at both axial ends, that is on opposite parts with respect to the intermediate part with the flexible tongue and the resilient wings, guide members which surround the strap to retain it in a position close to the pawl means of the flexible tongue.
Because of the structure of the retainer body, in particular due to the presence of rigid guide means at both axial ends of the body, known adjustable clasp devices are relatively long in the axial direction of the strap such that they are not well adapted to be used in applications in which a compact form of the retainer body is required.
For the purpose of overcoming this disadvantage, the subject of the present invention is a clasp device of the type indicated above, characterised in that the second guide members comprise an abutment portion which extends from the said at least one resilient wing at its end substantially opposite the main portion of the retainer body.
Thanks to this arrangement the retainer body of the clasp device according to the invention can be formed with a non-deformable main portion of limited axial extent, from which a plurality of flexible elements project which also define the second guide means for the strap, such that the clasp device can be formed in such a way as to be significantly more compact than known similar devices.
The invention also comprehends a headband for headgear such as a helmet, characterised in that it includes a tension adjustment fitting including at least one adjustable clasp device of the above-indicated type.
REFERENCES:
patent: 4727630 (1988-03-01), Alan
patent: 5161351 (1992-11-01), Woodruff
patent: 5469583 (1995-11-01), Akeley et al.
patent: 5579563 (1996-12-01), Sim
patent: 5752298 (1998-05-01), Howell
Lovato Attilio
Perini Filippo
National Molding of Europe S.r.L.
Sakran Victor N.
Sughrue Mion Zinn Macpeak & Seas, PLLC
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