US3695722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating or digging into surfaces and cutting members for this apparatus
Assignee: Errut Products Ltd
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Filing: 1970-02-18
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Granted: 1972-10-03
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Expires: 1990-02-18
Abstract
Abstract Apparatus for planing or cutting a surface of hard material including a plurality of support rods mounted between two support members and extending parallel to each other, each support shaft carrying a plurality of cutting members or tines rotatably mounted thereon through elongated aperatures and moving means for rotating the support members in an orbital path so that, after impact with the surface of material, the cutting members can be returned to a position approximately along the radial component extending outwardly from the orbital path before the next succeeding impact of that cutting member.
Inventors
- 👤 Ernest Sidney Fairweather
- 👤 Jim Furby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:06
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/08; E01C23/085; E01C23/088; B; B25; B25D; B25D17/00; B25D17/02; B28; B28D; B28D1/00; B28D1/18; B28D1/181; E21; E21C; E21C25/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
186 words
A machine for treating a surface, comprising in combination: a carriage carrying support means rigidly supporting a plurality of support rods extending in parallel relation and equiangularly spaced around a central axis; drive means for rotating said support means so that said support rods move in a circular path around said central axis; at least one cutting member for each support rod; each cutting member being elongated in one direction towards an outer end; a cutting tip portion adapted to cut into said surface and located at said outer end of said cutting member; said cutting member having an elongated aperture elongated in the direction towards its outer end and adapted to receive one of said support rods so that said cutting member can rotate around said support rod and can move a predetermined distance radially relative to said support rod; and the rotary speed of the moving means being such that, after impact with said surface, each cutting member freely pivots on its associated support rod to return substantially to its original position before the next succeeding impact of said cutting member with said surface.
Claim 2
Dependent Claim
186 words
A machine for treating a surface, comprising in combination: a carriage carrying support means rigidly supporting a plurality of support rods extending in parallel relation and equiangularly spaced around a central axis; drive means for rotating said support means so that said support rods move in a circular path around said central axis; at least one cutting member for each support rod; each cutting member being elongated in one direction towards an outer end; a cutting tip portion adapted to cut into said surface and located at said outer end of said cutting member; said cutting member having an elongated aperture elongated in the direction towards its outer end and adapted to receive one of said support rods so that said cutting member can rotate around said support rod and can move a predetermined distance radially relative to said support rod; and the rotary speed of the moving means being such that, after impact with said surface, each cutting member freely pivots on its associated support rod to return substantially to its original position before the next succeeding impact of said cutting member with said surface.
Claim 3
Dependent Claim
47 words
A machine characterized in accordance with claim 1, wherein said support means includes at least a main body part, a securement member having an aperture for receiving an end portion of said support rod and connecting means for releasably connecting this securement member to said main body.
Claim 4
Dependent Claim
68 words
A machine characterized in accordance with claim 1, including: a plurality of cutting members on each said support rod; spacer means located between said cutting members; and said spacer means being wider than the width of said cutting members and the arrangement of spacer means and cutting members on each support rod being identical so that the machine produces a number of parallel continuous slots in said surface.
Claim 5
Dependent Claim
47 words
A machine characterized in accordance with claim 3, wherein said support means includes at least a main body part, a securement member having an aperture for receiving an end portion of said support rod and connecting means for releasably connecting said securement member to said main body.
Claim 6
Dependent Claim
103 words
A cutting member comprising: an integral tungsten carbide cutting tip; an elongated body; said cutting tip being disposed at one end of said elongated body to cut into a surface to be treated; means defining an elongated aperture extending in a direction generally toward said end having said cutting tip; said means defining said elongated aperture being adapted to receive therethrough at least one support rod so that said cutting member may rotate around said support rod and move a predetermined distance radially relative to said support rod; and the center of gravity of the cutting member being spaced from said support rod.
Claim 7
Dependent Claim
103 words
A cutting member comprising: an integral tungsten carbide cutting tip; an elongated body; said cutting tip being disposed at one end of said elongated body to cut into a surface to be treated; means defining an elongated aperture extending in a direction generally toward said end having said cutting tip; said means defining said elongated aperture being adapted to receive therethrough at least one support rod so that said cutting member may rotate around said support rod and move a predetermined distance radially relative to said support rod; and the center of gravity of the cutting member being spaced from said support rod.
Claim 8
Dependent Claim
18 words
A cutting member as claimed in claim 5 which is of high speed steel providing its own tip.
Claim 9
Dependent Claim
23 words
A cutting member as claimed in claim 5 in which the tip has a spigot receivable in a recess in the cutting member.
Claim 10
Dependent Claim
16 words
A cutting member as claimed in claim 5 in which the tip is secured by brazing.
Claim 11
Dependent Claim
13 words
A cutting member as claimed in claim 5 which has two cutting tips.
Claim 12
Dependent Claim
30 words
A cutting member as claimed in claim 5 in which the center of gravity of the cutting member is spaced from the support means by from one-half to 12 inches.
Claim 13
Dependent Claim
32 words
A cutting member as claimed in claim 5 in which the center of gravity of the cutting member is spaced from the support meaNs by from 1 1/8 to 4 3/8 inches.
Claim 14
Dependent Claim
36 words
A cutting member as claimed in claim 5 in which the cutting angles of the cutting member may be from -10* to +25* on the front clearance and from +2* to +15* on the top clearance.
Claim 15
Dependent Claim
21 words
A cutting member as claimed in claim 5 in which the cutting tip is spherical or fully radius in side view.
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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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |