US3849949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll of pressure sensitive adhesive, adhesive coated abrasive discs and dispenser
Assignee: 3M Co
•
Filing: 1972-10-10
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Granted: 1974-11-26
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Expires: 1992-10-10
Abstract
Abstract A convolutely wound roll of pressure-sensitive adhesive coated abrasive discs is wound on a core without a protective release liner. A dispenser suitable for individually dispensing the abrasive discs from the roll having a severing edge substantially narrower than the diameter of the discs to be dispensed and registering means for insuring that adjacent discs are separated at their line of tangency to form abrasive discs.
Inventors
- 👤 A Steinhauser
- 👤 E Baratto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:53
CPC Classifications
B; B65; B65H; B65H35/00; B65H35/0006; B65H35/002; B65H35/0026; B24; B24D; B24D11/00; B24D11/008; B65D; B65D83/00; B65D83/08; B65D83/0847; B65D83/0852; B65D83/0882; Y; Y10; Y10T; Y10T225/00; Y10T225/20; Y10T225/232; Y10T225/236; Y10T225/237
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
85 words
An abrasive disc product comprising a convolutely wound concatenation of coated abrasive discs having disposed on the side opposite the coated abrasive a pressure-sensitive adhesive, each of said discs being joined to at least one other disc along a perforated line substantially tangent to the discs and said line being less than half the radius of the discs and with the adhesive coating placed in releaseable contact with the abrasive coating to maintain the wound roll and permit easy separation and application of the discs.
Claim 2
Dependent Claim
85 words
An abrasive disc product comprising a convolutely wound concatenation of coated abrasive discs having disposed on the side opposite the coated abrasive a pressure-sensitive adhesive, each of said discs being joined to at least one other disc along a perforated line substantially tangent to the discs and said line being less than half the radius of the discs and with the adhesive coating placed in releaseable contact with the abrasive coating to maintain the wound roll and permit easy separation and application of the discs.
Claim 3
Dependent Claim
15 words
The coated abrasive product of claim 1 wherein said pressure-sensitive adhesive is an acrylate copolymer.
Claim 4
Dependent Claim
15 words
The coated abrasive product of claim 2 wherein said acrylate copolymer is isooctylacrylate-acrylic acid copolymer.
References Cited (Backward Citations)
US3267623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |