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 armsInfo
- 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
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.
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) |
-
1974
- 1974-09-23 IT IT2756274A patent/IT1022192B/en active
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