US3964162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade scraper
Assignee: Louis M Gerson Co Inc
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Filing: 1975-06-25
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Granted: 1976-06-22
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Expires: 1995-06-25
Abstract
Abstract A blade scraper has a hand grip casing with a blade storage compartment and a slide mounted in a chamber of the casing for holding a razor blade and permitting retraction of the razor blade into an inoperative position and sliding movement to an operative position with the blade in a scraping position exposed outside of the chamber. A pressure sensitive locking button acts to lock the blade in the inoperative position or the exposed position. A safety button is interconnected with the slide so that pressure must be applied to two actuating buttons in order to expose the blade thus making it difficult for small children to accidentally place the scraper in a mode of operation dangerous for handling. The slide carries a safety dowel for locking the blade compartment when the blade is locked in its inoperative position.
Inventors
- 👤 Ronald L. Gerson
- 👤 Lawrence A. Caprio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:08
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/16; B44D3/162; B44D3/164
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
168 words
A razor blade cutting device comprising, a hand gripping casing having an enclosed blade storage compartment closed by a cover, a slide carrying means for mounting and carrying a cutting blade, said slide being mounted in a chamber defined by said casing with said chamber defining an opening at an end of said casing, pressure activated locking means for locking said slide and blade in a first retracted position with said blade wholly within and encased by said chamber and a second position with said blade moved toward said opening, pressure actuated first safety means providing a safety lock to hold said slide and blade in said first position while permitting release of said slide upon pressure actuation thereof whereby pressure must be applied to said first safety means and said locking means to expose said blade, and second safety means comprising a stop means for preventing opening of said cover unless said locking means and safety means are actuated to move said slide from said first position.
Claim 2
Dependent Claim
168 words
A razor blade cutting device comprising, a hand gripping casing having an enclosed blade storage compartment closed by a cover, a slide carrying means for mounting and carrying a cutting blade, said slide being mounted in a chamber defined by said casing with said chamber defining an opening at an end of said casing, pressure activated locking means for locking said slide and blade in a first retracted position with said blade wholly within and encased by said chamber and a second position with said blade moved toward said opening, pressure actuated first safety means providing a safety lock to hold said slide and blade in said first position while permitting release of said slide upon pressure actuation thereof whereby pressure must be applied to said first safety means and said locking means to expose said blade, and second safety means comprising a stop means for preventing opening of said cover unless said locking means and safety means are actuated to move said slide from said first position.
Claim 3
Dependent Claim
64 words
A blade cutting device in accordance with claim 1 and further comprising said casing and said slide being formed of a plastic material with said slide mounted for movement along a straight line and mounted for movement only upon simultaneous actuation of said locking means and safety means, said second position having said cutting blade exposed through said opening in an operative cutting position.
Claim 4
Dependent Claim
28 words
A blade cutting device in accordance with claim 2 wherein said first safety means and said locking means are positioned on opposite sides of said hand gripping casing.
Claim 5
Dependent Claim
39 words
A blade cutting device in accordance with claim 2 wherein said second safety means comprises an elongated hole defined by a portion of said cover and an elongated extension extending from said slide and axially aligned with said hole.
Claim 6
Dependent Claim
33 words
A blade cutting device in accordance with claim 4 wherein said cover is hinged along a line perpendicular to a path of movement of said slide from said first to said second position
Claim 7
Dependent Claim
89 words
A blade cutting device in accordance with claim 2 wherein said safety means and said locking means are positioned on opposite sides of said hand gripping casing for ease of simultaneous actuation by the fingers of a user and, a wall separates said slide chamber from said blade storage compartment, said wall defining an opening aligned with a hole defined by said cover, said second safety means comprising an extension of said slide adapted to pass through said hole and opening to lock said cover in a closed position.
Claim 8
Dependent Claim
194 words
In a blade cutting device comprising, a hand gripping casing having an enclosed blade storage compartment closed by a cover, a slide carrying means for mounting and carrying a cutting blade, said slide being mounted in a chamber defined by said casing with said chamber defining an opening at an end of said casing, pressure activated locking means for locking said slide and blade in a first retracted position with said blade wholly within and encased by said chamber and a second position with said blade moved toward said opening, pressure actuated first safety means providing a safety lock to hold said slide and blade in said first position while permitting release of said slide upon pressure actuation thereof whereby pressure must be applied to said first safety means and said locking means to expose said blade, and second safety means comprising a stop means for preventing opening of said cover unless said locking means and safety means are actuated to move said slide from said first position, the improvement comprising said slide being formed of a resilient material and carrying operative portions of said locking means, first safety means and second safety means.
Claim 9
Dependent Claim
194 words
In a blade cutting device comprising, a hand gripping casing having an enclosed blade storage compartment closed by a cover, a slide carrying means for mounting and carrying a cutting blade, said slide being mounted in a chamber defined by said casing with said chamber defining an opening at an end of said casing, pressure activated locking means for locking said slide and blade in a first retracted position with said blade wholly within and encased by said chamber and a second position with said blade moved toward said opening, pressure actuated first safety means providing a safety lock to hold said slide and blade in said first position while permitting release of said slide upon pressure actuation thereof whereby pressure must be applied to said first safety means and said locking means to expose said blade, and second safety means comprising a stop means for preventing opening of said cover unless said locking means and safety means are actuated to move said slide from said first position, the improvement comprising said slide being formed of a resilient material and carrying operative portions of said locking means, first safety means and second safety means.
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) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |