Patent US4235530A successfully refreshed from Google Patents.
US4235530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nosepad for spectacles
Assignee: Marwitz and Hauser GmbH
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Filing: 1979-04-25
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Granted: 1980-11-25
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Expires: 1999-04-25
Abstract
Abstract An eyeglass frame pad of SYLGARD No. 186 resin has a sleeve therein of Rilsan polyamide. The sleeve has a blind hole for receiving the flat end area of a metallic pad lever which is affixed to the eyeglass frame. The sleeve has vanes extending on either side which have holes therein and a negative sweep at their upper ends. The sleeve and its vanes are moulded in this pad. Subsequently, the pad lever is inserted in the sleeve.
Inventors
- 👤 Kurt Stohrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:53
CPC Classifications
G; G02; G02C; G02C5/00; G02C5/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
182 words
A pad to be fastened to the end areas of metallic pad levers affixed to eyeglass frames and placed on the area of the root of the nose of persons wearing said eyeglass frames, which pad is made of the silicon resin SYLGARD, comprising: a sleeve in the pad which is thin relative to the pad and has a flexibility lying between the pad and the pad lever, and which is composed of an injection-molded polyamide material of natural-color and has approximately the length of the end area of the pad lever and a blind hole with its opening at the upper edge of the pad and which has a shape allowing the flush insertion therein of the end area of the pad lever; said sleeve having a substantially smaller volume than the pad; said sleeve extending approximately in the center line of the pad; and said sleeve being provided with pad retaining elements on the outside thereof said retaining elements comprising thin vanes on either side of said sleeve having means on said vanes for securing the pad to said vanes.
Claim 2
Dependent Claim
182 words
A pad to be fastened to the end areas of metallic pad levers affixed to eyeglass frames and placed on the area of the root of the nose of persons wearing said eyeglass frames, which pad is made of the silicon resin SYLGARD, comprising: a sleeve in the pad which is thin relative to the pad and has a flexibility lying between the pad and the pad lever, and which is composed of an injection-molded polyamide material of natural-color and has approximately the length of the end area of the pad lever and a blind hole with its opening at the upper edge of the pad and which has a shape allowing the flush insertion therein of the end area of the pad lever; said sleeve having a substantially smaller volume than the pad; said sleeve extending approximately in the center line of the pad; and said sleeve being provided with pad retaining elements on the outside thereof said retaining elements comprising thin vanes on either side of said sleeve having means on said vanes for securing the pad to said vanes.
Claim 3
Dependent Claim
18 words
A pad according to claim 1, in which the polyamide is a polyamide 11 or a polyamide 12.
Claim 4
Dependent Claim
17 words
A pad according to claim 1, in which the polyamide is Rilsan of the BMOP 20 type.
Claim 5
Dependent Claim
22 words
A pad according to claim 1, in which the length of said sleeve is about 2/3 of the length of the pad.
Claim 6
Dependent Claim
23 words
A pad according to claim 1, in which the said retaining elements extend in the larger center plane of a flat kidney-shaped pad.
Claim 7
Dependent Claim
22 words
A pad according to claims 1 or 5, in which said retaining elements are very thin vanes which vanes have openings therein.
Claim 8
Dependent Claim
31 words
A pad according to claim 6, in which the vane front surface located in the direction of the open end of said sleeve is at a considerable distance from this end.
Claim 9
Dependent Claim
16 words
A pad according to claim 7, in which said vane front surface has a negative sweep.
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) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |