Patent US5911951A successfully refreshed from Google Patents.
US5116351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety scalpel
Assignee: Individual
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Filing: 1989-10-11
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Granted: 1992-05-26
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Expires: 2009-10-11
Abstract
Abstract The scalpel includes a handle with a blade moveably mounted to it by a leaf spring. A blade protecting sheath is fixably mounted to the handle. In its normal position, the blade is within the sheath such that the cutting edge is protected. In order to expose the cutting edge, the blade is depressed against the force of the spring. When not in use, the blade may be locked within the sheath.
Inventors
- 👤 Paris R. Frassetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/3211
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A scalpel comprising a handle, a blade having a cutting edge, means mounted on said handle for protecting said cutting edge, means for mounting said blade for movement relative to said protecting means from a protected position, wherein said cutting edge is within said protecting means, to an exposed position, wherein said cutting edge is exposed, means for biasing said blade toward said protected position, said protecting means having a cutaway portion exposing a part of said blade to permit access to said blade part for application force on said blade to move said blade toward said exposed position and further comprising means for locking said blade in said protected position, said locking means comprising means for preventing relative movement between said blade and said protecting means, said relative movement preventing means comprising a recess in said blade, and a part having a protrusion, said part being mounted for movement on said protecting means from a first position wherein said protrusion is situated within said recess and a second position wherein said protrusion is remote from said recess.
Claim 2
Dependent Claim
178 words
A scalpel comprising a handle, a blade having a cutting edge, means mounted on said handle for protecting said cutting edge, means for mounting said blade for movement relative to said protecting means from a protected position, wherein said cutting edge is within said protecting means, to an exposed position, wherein said cutting edge is exposed, means for biasing said blade toward said protected position, said protecting means having a cutaway portion exposing a part of said blade to permit access to said blade part for application force on said blade to move said blade toward said exposed position and further comprising means for locking said blade in said protected position, said locking means comprising means for preventing relative movement between said blade and said protecting means, said relative movement preventing means comprising a recess in said blade, and a part having a protrusion, said part being mounted for movement on said protecting means from a first position wherein said protrusion is situated within said recess and a second position wherein said protrusion is remote from said recess.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |