Patent US4414872A successfully refreshed from Google Patents.
US4414872A
Expired / Lapsed
US
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Lens tape cutter
Assignee: Sola International Inc
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Filing: 1981-04-29
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Granted: 1983-11-15
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Expires: 2001-04-29
Abstract
Abstract A lens surface is taped for protection during second side finishing and excess tape is trimmed from the lens with a heated cutting wire.
Inventors
- 👤 George D. Bard
- 👤 Robert J. Dusza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:17
CPC Classifications
B; B26; B26F; B26F3/00; B26F3/06; B26F3/08; B26F3/12; Y; Y10; Y10S; Y10S83/00; Y10S83/914; Y10T; Y10T83/00; Y10T83/283; Y10T83/293; Y10T83/869; Y10T83/8748; Y10T83/8749; Y10T83/929; Y10T83/9292
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
170 words
An apparatus for severing excess tape at the edges of a lens surface which has been covered with tape comprising: a base, said base including a lens support; a length of electrical heating wire formed in the shape of said lens, said lens-shaped wire having a diameter approximately the same as that of said lens; a sleeve made of dielectric material, said sleeve supporting said lens-shaped wire; a housing for said sleeve, said housing pivoting between a position away from said lens support and a position in which said housing covers said lens support; at least two leaf springs, said at least two leaf springs suspending said sleeve from the upper surface of said housing; an operating knob, said operating knob connected to a support, said support being fixed to said sleeve; means for energizing said lens-shaped wire; whereby when said ring is pivoted to a position covering said lens and said operating knob is depressed, said excess tape is severed from said tape covering said lens by said wire.
Claim 2
Independent Claim
170 words
An apparatus for severing excess tape at the edges of a lens surface which has been covered with tape comprising: a base, said base including a lens support; a length of electrical heating wire formed in the shape of said lens, said lens-shaped wire having a diameter approximately the same as that of said lens; a sleeve made of dielectric material, said sleeve supporting said lens-shaped wire; a housing for said sleeve, said housing pivoting between a position away from said lens support and a position in which said housing covers said lens support; at least two leaf springs, said at least two leaf springs suspending said sleeve from the upper surface of said housing; an operating knob, said operating knob connected to a support, said support being fixed to said sleeve; means for energizing said lens-shaped wire; whereby when said ring is pivoted to a position covering said lens and said operating knob is depressed, said excess tape is severed from said tape covering said lens by said wire.
Claim 3
Dependent Claim
78 words
The apparatus for cutting tape of claim 1 wherein said means for energizing said lens-shaped wire comprises an electrical switch in an electrical circuit between a source of electrical energy and said wire, said switch normally electrically disconnecting said wire from said source of current and being operable at a selected time prior to contact of said wire with said tape for connecting said wire in electrical circuit with said current source and causing heating of said wire.
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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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |