Patent US3679994A successfully refreshed from Google Patents.
Patent US4100636A successfully refreshed from Google Patents.
US4100636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter
Assignee: Individual
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Filing: 1975-09-19
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Granted: 1978-07-18
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Expires: 1995-09-19
Abstract
Abstract A grass edge trimmer includes a blade having at least one longitudinal cutting edge mounted on a handle by means of a pair of clamping portions. The clamping portions are located on opposite sides of the blade and engage the same along but spaced from said cutting edge so as to stiffen the blade. One of the clamping portions is removable from the handle and permits a worn cutting edge of the blade to be interchanged for a fresh cutting edge.
Inventors
- 👤 Theodor Ott
- 👤 Max Gaisser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:40
CPC Classifications
A; A01; A01G; A01G3/00; A01G3/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
246 words
A cutter, particularly a grass edge cutter, comprising a handle; a blade having two elongated cutting edges spaced from each other in a direction transverse to the direction of elongation of said cutting edges and each formed with opposite end regions spaced from each other in said direction of elongation; and means for supporting said blade on said handle, having a pair of clamping members operative for clamping said blade therebetween in an operative position, and for releasing said blade so as to detach the latter therefrom, said clamping members in said operative position protecting at least one of said end regions of one of said cutting edges from wear whereas the remainder of said one cutting edge is exposed, and said clamping members in said operative position simultaneously also completely protecting the other cutting edge, at least one of said clamping members having a first projecting portion located in the vicinity of said one end region of said one cutting edge and extending for a predetermined distance in a first direction transverse to said direction of elongation and beyond said one cutting edge so as to protect said one end region of said one cutting edge from wear, and a second projecting portion located in the vicinity of said other cutting edge and extending for a predetermined distance in a second transverse direction substantially opposite to said first transverse direction and beyond said other cutting edge so as to completely protect said other cutting edge.
Claim 2
Dependent Claim
246 words
A cutter, particularly a grass edge cutter, comprising a handle; a blade having two elongated cutting edges spaced from each other in a direction transverse to the direction of elongation of said cutting edges and each formed with opposite end regions spaced from each other in said direction of elongation; and means for supporting said blade on said handle, having a pair of clamping members operative for clamping said blade therebetween in an operative position, and for releasing said blade so as to detach the latter therefrom, said clamping members in said operative position protecting at least one of said end regions of one of said cutting edges from wear whereas the remainder of said one cutting edge is exposed, and said clamping members in said operative position simultaneously also completely protecting the other cutting edge, at least one of said clamping members having a first projecting portion located in the vicinity of said one end region of said one cutting edge and extending for a predetermined distance in a first direction transverse to said direction of elongation and beyond said one cutting edge so as to protect said one end region of said one cutting edge from wear, and a second projecting portion located in the vicinity of said other cutting edge and extending for a predetermined distance in a second transverse direction substantially opposite to said first transverse direction and beyond said other cutting edge so as to completely protect said other cutting edge.
Claim 3
Dependent Claim
52 words
A cutter as defined in claim 1, wherein one of said clamping members is securely mounted to said handle and has a pair of pins projecting outwardly thereof, and wherein the other of said clamping members is removable from said handle and has a pair of openings for friction-tightly receiving said pins.
Claim 4
Dependent Claim
102 words
A cutter as defined in claim 1, wherein said clamping members are generally planar and have a longitudinal stiffening edge engaging said blade along but spaced from said cutting edge, and a further projecting portion also located on at least one of said clamping members in the vicinity of the other one of said one end regions of said cutting edge and extending for a predetermined distance in said first transverse direction beyond said one cutting edge so as to protect said other end region from wear and cooperate with said first projecting portion and said stiffening edge for stiffening said blade.
Claim 5
Dependent Claim
19 words
A cutter as defined in claim 1, wherein said first and said further projecting portions are of wear-resistant material.
Claim 6
Dependent Claim
19 words
A cutter as defined in claim 3, wherein each of said clamping members have a projection extending outwardly thereof.
Claim 7
Dependent Claim
59 words
A cutter as defined in claim 5; and further comprising means for guarding said first projecting portion from wear, said guarding means being a generally U-shaped cap of wear-resistant material having opposite sides which surround said first projecting portion, said opposite sides of said cap having a pair of indentations which respectively engage said projections of said clamping members.
Claim 8
Dependent Claim
26 words
A cutter as defined in claim 6; and further comprising slits on said clamping members, and wherein said cap has inwardly-bent ends insertable into said slits.
Claim 9
Dependent Claim
22 words
A cutter as defined in claim 1, wherein said blade is planar and has a thickness substantially between 0.1 and 1.0 mm.
Claim 10
Dependent Claim
29 words
A cutter as defined in claim 1; and further comprising rake means on said handle spaced from said cutting edges, including a plurality of grooves for brushing away cuttings.
Claim 11
Dependent Claim
19 words
A cutter as defined in claim 9; wherein said grooves face in direction away from said one cutting edge.
Claim 12
Dependent Claim
22 words
A cutter as defined in claim 1, wherein said handle is elongated in a direction substantially parallel to said elongated cutting edge.
Claim 13
Dependent Claim
22 words
A cutter as defined in claim 11, wherein the center of gravity of the cutter lies along the elongation of said handle.
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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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |