US3841708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavating tool device
Assignee: Kennametal Inc
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Filing: 1972-06-15
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Granted: 1974-10-15
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Expires: 1992-06-15
Abstract
Abstract An excavating tool device in which a tool which is symmetrical about a longitudinal axis is provided with a longitudinal shank rotatable in a bore in a support block while the support block is provided with a mounting rib detachably connected to a yoke which is adapted for being fixedly mounted on a drive member such as the drum of a mining machine.
Inventors
- 👤 T Kniff
- 👤 D Leibee
- 👤 S Oaks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:21
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/197
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
343 words
A tool device for use with excavating equipment comprising; yoke means having a leading end and a trailing end and having a bottom side adapted for being fixedly mounted on a driving member which is movable to drive the yoke means toward the leading end thereof, said yoke means comprising spaced support legs extending in the fore and aft direction and projecting upwardly away from said member, block means comprising an upper portion and at least one rib dependent from said upper portion and extending in the fore and aft direction and disposed in parallel adjacent and at least in part coextensive relation to said support legs and also having leading and trailing ends, connector means extending transversely through the legs on the yoke means and said rib detachably connecting said block means to said yoke means, bore means extending into said upper portion of said block means from the leading end thereof in the fore and aft direction and so inclined that the axis thereof diverges from the bottom side of said yoke means in the direction of movement imparted to said yoke means and block means by said member, tool means having shank means receivable in said bore means and having working end means concentric with said shank means and protruding outwardly from the leading end of said bore means, cooperating elements of abutment means on said tool means and block means to sustain working loads imposed on said tool means, keeper means retaining said tool means in said bore means while permitting rotation of the tool means in said bore means, the side of said rib facing away from said upper portion of said block means extending substantially parallel to the direction of movement of the block means during working operations, a rearwardly facing first abutment surface on the rear end of said rib disposed in a plane substantially perpendicular to the axis of said bore means in the block means, and A forwardly facing second abutment surface on said yoke means parallel to and engaging said first abutment surface.
Claim 2
Dependent Claim
343 words
A tool device for use with excavating equipment comprising; yoke means having a leading end and a trailing end and having a bottom side adapted for being fixedly mounted on a driving member which is movable to drive the yoke means toward the leading end thereof, said yoke means comprising spaced support legs extending in the fore and aft direction and projecting upwardly away from said member, block means comprising an upper portion and at least one rib dependent from said upper portion and extending in the fore and aft direction and disposed in parallel adjacent and at least in part coextensive relation to said support legs and also having leading and trailing ends, connector means extending transversely through the legs on the yoke means and said rib detachably connecting said block means to said yoke means, bore means extending into said upper portion of said block means from the leading end thereof in the fore and aft direction and so inclined that the axis thereof diverges from the bottom side of said yoke means in the direction of movement imparted to said yoke means and block means by said member, tool means having shank means receivable in said bore means and having working end means concentric with said shank means and protruding outwardly from the leading end of said bore means, cooperating elements of abutment means on said tool means and block means to sustain working loads imposed on said tool means, keeper means retaining said tool means in said bore means while permitting rotation of the tool means in said bore means, the side of said rib facing away from said upper portion of said block means extending substantially parallel to the direction of movement of the block means during working operations, a rearwardly facing first abutment surface on the rear end of said rib disposed in a plane substantially perpendicular to the axis of said bore means in the block means, and A forwardly facing second abutment surface on said yoke means parallel to and engaging said first abutment surface.
Claim 3
Dependent Claim
26 words
A tool device according to claim 1 in which said upper portion of said block means is connected to the trailing end of the said rib.
Claim 4
Dependent Claim
27 words
A tool device according to claim 1 in which said upper portion of said block means is connected to the leading end of the said rib. l
Claim 5
Dependent Claim
197 words
A tool device according to claim 1 in which the said bore means in the upper portion of said block means comprises a larger diameter portion adjacent the leading end of said block means and a smaller diameter portion adjacent the trailing end of said block means, said bore portions being coaxial, and a forwardly facing shoulder at the juncture of said portions of said bore means, said tool means comprising shank means having a larger diameter leading portion and a smaller diameter trailing portion and a rearwardly facing shoulder at the juncture of said portions of said shank means, said shank means being rotatable in said bore means and the said shoulder on said tool means and the shoulder in said bore means being in thrust transmitting engagement when said shank means is disposed in said bore means, and keeper means carried by at least one of said block means and shank means and operatively engaging the other thereof for retaining said shank means in said bore means and preventing any substantial degree of axial movement of the shank means in the bore means while leaving said shank means free to rotate in said bore means.
Claim 6
Dependent Claim
169 words
A tool device according to claim 1 in which said shank means is in the form of a sleeve having an axial bore therein, said tool means comprising a tool having a tool shank receivable in the axial bore in said sleeve from the front end of the sleeve, said tool having a working portion concentric with the axis of said tool shank and protruding forwardly therefrom, said elements of abutment means comprising a forwardly facing abutment surface on said sleeve and a rearwardly facing abutment surface on said tool in engagement therewith and a forwardly facing abutment surface in said bore means and a rearwardly facing abutment surface on said sleeve in engagement therewith, and a keeper means connecting said tool shank to said sleeve and said sleeve to said block means permitting free rotation of the tool shank in the sleeve and the sleeve in the bore means while preventing any substantial forward movement of the tool in the sleeve or the sleeve in the bore means.
Claim 7
Dependent Claim
43 words
A tool device according to claim 5 in which said keeper means includes a resilient keeper element captive on said tool shank and said sleeve comprises internal recess means engageable by said keeper element when said tool shank is inserted into said sleeve.
Claim 8
Dependent Claim
87 words
A tool device according to claim 1 in which the upper edges of said legs incline downwardly toward the trailing end of said yoke means, said block means comprising downwardly facing shoulders parallel to and overlying the said upper edges of said legs, said yoke means having a substantially flat upwardly facing surface between said legs extending in the direction of movement of the tool device during work operations, said rib on said block means having a bottom surface parallel to and adjacent said upwardly facing surface.
Claim 9
Dependent Claim
262 words
In an excavating tool device; a support block having leading and trailing ends, a bore extending in the fore and aft direction through the block, said bore adapted for receiving a tool having a shank portion insertable into said bore from the forward end of the bore and rotatable in the bore, forwardly facing abutment means on said block concentric with said bore for engagement with rearwardly facing abutment means on the tool, the said tool including a working portion concentric with the shank portion and protruding outwardly from the forward end of the bore when the shank portion is seated in the bore, keeper means adapted for operatively interconnecting said tool and block and preventing any substantial degree of axiAl movement of the tool in said bore while permitting free rotation of the tool in said bore, said block having at least one fore and aft rib integral therewith and projecting therefrom substantially in a plane which contains the axis of said bore, said rib including a lateral bore for receiving a pin for connection of the block to a support member, and means forming a rearwardly facing abutment region at the trailing end of said rib substantially perpendicular to and laterally offset from the axis of said bore and adapted for engagement with a forwardly facing abutment region on a said support member, the side of said rib which faces away from said block extending in the direction of movement of said block, the axis of said bore and the said side of said rib diverging in the forward direction.
Claim 10
Dependent Claim
262 words
In an excavating tool device; a support block having leading and trailing ends, a bore extending in the fore and aft direction through the block, said bore adapted for receiving a tool having a shank portion insertable into said bore from the forward end of the bore and rotatable in the bore, forwardly facing abutment means on said block concentric with said bore for engagement with rearwardly facing abutment means on the tool, the said tool including a working portion concentric with the shank portion and protruding outwardly from the forward end of the bore when the shank portion is seated in the bore, keeper means adapted for operatively interconnecting said tool and block and preventing any substantial degree of axiAl movement of the tool in said bore while permitting free rotation of the tool in said bore, said block having at least one fore and aft rib integral therewith and projecting therefrom substantially in a plane which contains the axis of said bore, said rib including a lateral bore for receiving a pin for connection of the block to a support member, and means forming a rearwardly facing abutment region at the trailing end of said rib substantially perpendicular to and laterally offset from the axis of said bore and adapted for engagement with a forwardly facing abutment region on a said support member, the side of said rib which faces away from said block extending in the direction of movement of said block, the axis of said bore and the said side of said rib diverging in the forward direction.
Claim 11
Dependent Claim
39 words
A tool device according to claim 8 in which said bore comprises a larger diameter forward portion and a smaller diameter rearward portion and said abutment means comprises a forwardly facing shoulder at the juncture of said bore portions.
Claim 12
Dependent Claim
34 words
A tool device according to claim 9 in which said portions of said bore are about equal in axial length and said shoulder is in about the middle of the length of said bore.
Claim 13
Dependent Claim
171 words
A yoke especially adapted for receiving a block for supporting a rotary mining tool, the block having a dependent fore and aft rib, said yoke comprising a base having a bottom surface with leading and trailing ends and adapted for mounting on a driving member for being driven thereby in the forward direction toward the leading end of said bottom surface, spaced parallel legs fixed to said base along the side edges thereof and extending in the fore and aft direction and diverging from said bottom surface in the forward direction, said legs adapted for closely receiving said rib therebetween, registering lateral bores in said legs near the forward ends for receiving a pin to connect the rib to the legs, and an abutment element on said base and upstanding therefrom near the trailing end having a forwardly facing abutment surface substantially perpendicular to the axis of the rotary tool and laterally offset therefrom, said surface adapted to abut a rearwardly facing abutment region on a rib disposed between said legs.
Claim 14
Dependent Claim
171 words
A yoke especially adapted for receiving a block for supporting a rotary mining tool, the block having a dependent fore and aft rib, said yoke comprising a base having a bottom surface with leading and trailing ends and adapted for mounting on a driving member for being driven thereby in the forward direction toward the leading end of said bottom surface, spaced parallel legs fixed to said base along the side edges thereof and extending in the fore and aft direction and diverging from said bottom surface in the forward direction, said legs adapted for closely receiving said rib therebetween, registering lateral bores in said legs near the forward ends for receiving a pin to connect the rib to the legs, and an abutment element on said base and upstanding therefrom near the trailing end having a forwardly facing abutment surface substantially perpendicular to the axis of the rotary tool and laterally offset therefrom, said surface adapted to abut a rearwardly facing abutment region on a rib disposed between said legs.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |