US3740845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical knife with holding means
Assignee: Individual
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Filing: 1971-07-26
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Granted: 1973-06-26
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Expires: 1991-07-26
Abstract
Abstract A stabilizing and guiding attachment for an electric knife has a pair of members extending longitudinally along and flanking the knife blade. A holding element, which clamps to the knife body, is attached to these members by means of a spring-biased hinge or a resiliently flexible ligature so that the two members can deflect jointly upwardly away from the cutting edge of the blade and thus in the direction opposite the direction in which the blade is passed through the article'' to be severed. The members are formed at their ends remote from the knife body with teeth engageable with an object to be cut so that, as the knife blade is brought into engagement with the object, the teeth first engage the object and then bear on it to immobilize this object and stabilize it during cutting. The members can constitute the sides of a U-section channel or they can be separate strips transversely joined at several locations so that both sides of the cutting kerf are engaged.
Inventors
- 👤 L Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:43
CPC Classifications
B; B26; B26B; B26B7/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
124 words
A retaining unit for a mechanical knife having a handle and an elongated knife blade extending longitudinally from said handle and longitudinally reciprocable relatively thereto, said unit comprising: a mounting member detachably engagable with said handle at said end thereof; a pair of flat elongated members flanking said blade and generally parallel thereto extending at least along the entire length of said blade while being flexibly connected to said mounting member; and teeth formed on edges of said elongated members at least in a region thereof remote from said mounting member for engagement with an object to be cut by said blade, said elongated members being deflected from a normal position laterally concealing said blade, upon cutting engagement of said blade with said object.
Claim 2
Dependent Claim
124 words
A retaining unit for a mechanical knife having a handle and an elongated knife blade extending longitudinally from said handle and longitudinally reciprocable relatively thereto, said unit comprising: a mounting member detachably engagable with said handle at said end thereof; a pair of flat elongated members flanking said blade and generally parallel thereto extending at least along the entire length of said blade while being flexibly connected to said mounting member; and teeth formed on edges of said elongated members at least in a region thereof remote from said mounting member for engagement with an object to be cut by said blade, said elongated members being deflected from a normal position laterally concealing said blade, upon cutting engagement of said blade with said object.
Claim 3
Dependent Claim
23 words
The retaining unit defined in claim 1, further comprising a resiliently deflectable ligature extending longitudinally between said elongated members and said mounting members.
Claim 4
Dependent Claim
24 words
The retaining unit defined in claim 2 wherein said members and said ligature are all formed unitarily from a single piece of sheet material.
Claim 5
Dependent Claim
22 words
The retaining unit defined in claim 3 wherein said mounting member is a ring adapted to surround said end of said handle.
Claim 6
Dependent Claim
196 words
A cutting instrument comprising an elongated handle having an end and receiving a motor; A blade extending longitudinally from said handle and having a cutting edge, said blade being coupled with said motor within said handle and longitudinal reciprocation relative to said handle; and a retaining unit for holding an object to be cut by said blade, said retaining unit including a mounting member on said handle at said end thereof, a pair of elongated members flanking said blade along opposite sides thereof over substantially the full length of said blade and laterally concealing said blade in an undeflected position of said elongated members, said elongated members being generally flat and parallel to one another and to said blade, a ligature flexibly connecting said mounting member to said elongated member at ends thereof proximal to said housing for enabling deflection of said elongated members substantially in the planes thereof, and teeth formed on edges of said elongated members at least at ends thereof remote from said handle for engagement with a object to be cut by said blade, thereby retaining said object on opposite sides of the blade as the blade is passed into said object.
Claim 7
Dependent Claim
196 words
A cutting instrument comprising an elongated handle having an end and receiving a motor; A blade extending longitudinally from said handle and having a cutting edge, said blade being coupled with said motor within said handle and longitudinal reciprocation relative to said handle; and a retaining unit for holding an object to be cut by said blade, said retaining unit including a mounting member on said handle at said end thereof, a pair of elongated members flanking said blade along opposite sides thereof over substantially the full length of said blade and laterally concealing said blade in an undeflected position of said elongated members, said elongated members being generally flat and parallel to one another and to said blade, a ligature flexibly connecting said mounting member to said elongated member at ends thereof proximal to said housing for enabling deflection of said elongated members substantially in the planes thereof, and teeth formed on edges of said elongated members at least at ends thereof remote from said handle for engagement with a object to be cut by said blade, thereby retaining said object on opposite sides of the blade as the blade is passed into said object.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |