US4198750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ring blade knife having wear plate
Assignee: Bettcher Industries Inc
•
Filing: 1978-10-16
•
Granted: 1980-04-22
•
Expires: 1998-10-16
Abstract
Abstract A hand knife for use in processing meat. The knife has a handle, a circular housing secured to one end of the handle, and a rotatably power driven ring-like blade in part circumferentially contained by the housing. An arcuate wear pad or plate overlies a portion of the inside surface of the blade adjacent the handle limiting movement of the blade away from the blade housing near the handle and against the surrounding housing opposite the handle during use, distributing wear that otherwise occurs between the interior of the surrounding housing and the outside of the blade, and transferring some of the wear to the exterior of the wear plate and the inside of the blade. The ends of the wear plate are tapered outwardly and toward the blade and each has a surface transverse to and overlying the inside surface of the blade. The transverse surfaces form knife edges at the inside surface of the blade and deflects outwardly cut portions of product being processed as they move through the blade and housing and limit their movement circumferentially with the blade.
Inventors
- 👤 Louis A. Bettcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:12
CPC Classifications
B; B26; B26B; B26B25/00; B26B25/002
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured at one portion to and extending from the handle, a ring-like solid blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, an arcuate member secured against said housing adjacent the handle of said knife, said arcuate member having an arcuate surface facing an inside circular surface of said blade and located relative to said housing to contact an inside circular surface of said blade when a force is applied to said blade in a direction having a component away from said handle.
Claim 2
Dependent Claim
115 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured at one portion to and extending from the handle, a ring-like solid blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, an arcuate member secured against said housing adjacent the handle of said knife, said arcuate member having an arcuate surface facing an inside circular surface of said blade and located relative to said housing to contact an inside circular surface of said blade when a force is applied to said blade in a direction having a component away from said handle.
Claim 3
Dependent Claim
217 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, the housing having a circular portion with an inside diameter substantially equal to the outside diameter of the blade and an arcuate portion where the housing is secured to the handle with an inside diameter smaller than that of said circular portion and axially displaced from the plane of said circular portion, a wear plate secured against said housing adjacent said arcuate portion thereof, said wear plate having a first and second arcuate surface portions facing in the direction of the inside circular surface of the blade, said first arcuate surface portion having an outside diameter substantially equal to the inside diameter of said arcuate portion of the housing and said second arcuate surface portion of the wear plate having an outside diameter substantially equal to the inside diameter of said blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle.
Claim 4
Dependent Claim
217 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, the housing having a circular portion with an inside diameter substantially equal to the outside diameter of the blade and an arcuate portion where the housing is secured to the handle with an inside diameter smaller than that of said circular portion and axially displaced from the plane of said circular portion, a wear plate secured against said housing adjacent said arcuate portion thereof, said wear plate having a first and second arcuate surface portions facing in the direction of the inside circular surface of the blade, said first arcuate surface portion having an outside diameter substantially equal to the inside diameter of said arcuate portion of the housing and said second arcuate surface portion of the wear plate having an outside diameter substantially equal to the inside diameter of said blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle.
Claim 5
Dependent Claim
153 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured at one portion to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, a wear plate secured against said housing adjacent the handle of said knife, said plate having an arcuate wear surface facing the inside circular surface of the blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle, and having an end surface transverse to and directly adjacent the inside circular surface of the blade, facing toward the direction of blade rotation to deflect cut product moving in the peripheral direction of the blade movement.
Claim 6
Dependent Claim
153 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured at one portion to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, a wear plate secured against said housing adjacent the handle of said knife, said plate having an arcuate wear surface facing the inside circular surface of the blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle, and having an end surface transverse to and directly adjacent the inside circular surface of the blade, facing toward the direction of blade rotation to deflect cut product moving in the peripheral direction of the blade movement.
Claim 7
Dependent Claim
179 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured at one portion to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, a wear plate secured against said housing adjacent the handle of said knife, said plate having an arcuate wear surface facing the inside circular surface of the blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle, an end surface on said wear plate transverse to and directly adjacent the inside circular surface of the blade, facing toward the direction of blade rotation to deflect cut product moving in the peripheral direction of the blade movement, and a knife edge on said end surface at the juncture of the end surface and the inside peripheral surface of the circular blade.
Claim 8
Dependent Claim
179 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured at one portion to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, a wear plate secured against said housing adjacent the handle of said knife, said plate having an arcuate wear surface facing the inside circular surface of the blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle, an end surface on said wear plate transverse to and directly adjacent the inside circular surface of the blade, facing toward the direction of blade rotation to deflect cut product moving in the peripheral direction of the blade movement, and a knife edge on said end surface at the juncture of the end surface and the inside peripheral surface of the circular blade.
Claim 9
Dependent Claim
276 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, the housing having a circular portion with an inside diameter substantially equal to the outside diameter of the blade and an arcuate portion where the housing is secured to the handle with an inside diameter smaller than that of the circular portion and axially displaced from the plane of said circular portion, a wear plate secured against said housing adjacent the arcuate portion, said plate having first and second arcuate surface portions facing in the direction of the inside circular surface of the blade, said first arcuate surface portion having an outside diameter substantially equal to the inside diameter of said arcuate portion of the housing and said second arcuate surface portion of the wear plate having an outside diameter substantially equal to the inside diameter of said blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle, said plate having an end surface transverse to and directly adjacent the inside circular surface of the blade, facing toward the direction of blade rotation to deflect cut product moving in the peripheral direction of the blade movement, and a knife edge on said end surface at the juncture of the end surface and the inside peripheral surface of the circular blade.
Claim 10
Dependent Claim
276 words
A hand knife for cutting meat and the like comprising a handle, a ring-like blade housing secured to and extending from the handle, a ring-like blade carried by the housing for rotary movement relative to the housing, said housing circumferentially encircling a portion of the outside periphery of the blade, the housing having a circular portion with an inside diameter substantially equal to the outside diameter of the blade and an arcuate portion where the housing is secured to the handle with an inside diameter smaller than that of the circular portion and axially displaced from the plane of said circular portion, a wear plate secured against said housing adjacent the arcuate portion, said plate having first and second arcuate surface portions facing in the direction of the inside circular surface of the blade, said first arcuate surface portion having an outside diameter substantially equal to the inside diameter of said arcuate portion of the housing and said second arcuate surface portion of the wear plate having an outside diameter substantially equal to the inside diameter of said blade and located relative to the housing to contact the inside circular surface of the blade during cutting when a force is applied to the blade in a direction having a component away from the handle, said plate having an end surface transverse to and directly adjacent the inside circular surface of the blade, facing toward the direction of blade rotation to deflect cut product moving in the peripheral direction of the blade movement, and a knife edge on said end surface at the juncture of the end surface and the inside peripheral surface of the circular blade.
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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |