IT1022192B - Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms - Google Patents

Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms

Info

Publication number
IT1022192B
IT1022192B IT2756274A IT2756274A IT1022192B IT 1022192 B IT1022192 B IT 1022192B IT 2756274 A IT2756274 A IT 2756274A IT 2756274 A IT2756274 A IT 2756274A IT 1022192 B IT1022192 B IT 1022192B
Authority
IT
Italy
Prior art keywords
springs
compression
esp
tension
thermoplastic material
Prior art date
Application number
IT2756274A
Other languages
Italian (it)
Original Assignee
Mazzucchelli Celluloide Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mazzucchelli Celluloide Spa filed Critical Mazzucchelli Celluloide Spa
Priority to IT2756274A priority Critical patent/IT1022192B/en
Priority to FR7501718A priority patent/FR2285229A1/en
Application granted granted Critical
Publication of IT1022192B publication Critical patent/IT1022192B/en

Links

Abstract

Springs comprise an elongated body involving at least two successive elbows or undulations, and made of thermoplastic material. Used for mfr. of springs to be used in tension or compression, esp. as springs operating in compression to press the side-arms of spectacles gently against the wearer's head. A combination of a spring element and end fittings or couplings may be made in one pice from material which is lightweight and non-corrodible. Suitable for mass prodn. of modestly prices sunglasses etc. Spring may be (injection-) moulded directly to shape or machined from solid bar profiles, viz by cutting parallel grooves in staggered planes along opposite faces of a bar and then cutting segments from the end of the bar.
IT2756274A 1974-09-23 1974-09-23 Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms IT1022192B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
IT2756274A IT1022192B (en) 1974-09-23 1974-09-23 Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms
FR7501718A FR2285229A1 (en) 1974-09-23 1975-01-21 Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2756274A IT1022192B (en) 1974-09-23 1974-09-23 Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms

Publications (1)

Publication Number Publication Date
IT1022192B true IT1022192B (en) 1978-03-20

Family

ID=11221901

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2756274A IT1022192B (en) 1974-09-23 1974-09-23 Undulating springs of thermoplastic material - for use in tension or compression esp. for springs for spectacle side arms

Country Status (1)

Country Link
IT (1) IT1022192B (en)

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