US3802128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for abrading by extruding
Assignee: Extrude Hone LLC
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Filing: 1972-04-28
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Granted: 1974-04-09
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Expires: 1992-04-28
Abstract
Abstract A machine is provided for abrading a metal workpiece by extruding through or across it a medium in which are dispersed finely divided abrasive particles, the medium being of such a character that under the extrusion pressure it holds the abrasive particles in such contact with the workpiece as to remove metal as desired. The machine provides rugged and substantially inflexible support for the extruding mechanism and the workpiece during operation so that the application of the abrading medium to the workpiece is very closely controlled, so that long production runs at accurately controlled very fine tolerances are possible.
Inventors
- 👤 R Minear
- 👤 N Nokovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:14
CPC Classifications
B; B24; B24B; B24B31/00; B24B31/10; B24B31/116
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
332 words
In a machine for abrading by use of an extruding medium; a base including a table work top; an elongated head frame extending across said table top and of a predetermined width and height; means for guiding said frame for vertical movement toward and away from said table top; said guiding means including two vertically extending guides; one near each end of said frame; each of said guides being strong and rigid and including two parallel linear vertically extending guide ways spaced apart approximately equal to said predetermined width; bracing means rigidly connecting said guide ways; plural guide follower members mounted on said head frame in position to snugly engage said guide ways; some of said guide members near each end of said frame being engageable between said head frame and said guide ways at spaced vertical levels; some of said guide members having engagement with said ways preventing relative movement of said head frame in a first horizontal direction relative to said ways; other of said guide members having engagement with said ways preventing relative movement of said head frame in a second horizontal direction relative to said ways at right angles to said first direction; upper and lower vertically oriented positively actuated medium driving devices axially aligned; each of said devices arranged to discharge medium toward and into the other device through a communicating opening in a workpiece clamped between said devices; said uPper device being rigidly mounted in in said head frame; said lower device being rigidly mounted in said base; power means drivingly connected with each of said medium driving devices; said power means carried by said base; and clamping means connected at opposite ends of said head frame for moving said head frame to cause travel of said upper medium driving device towards and away from said lower medium driving device to clamp and release a workpiece between them; said last named means being so constructed and arranged as to maintain a workpiece clamped under heavy pressure.
Claim 2
Dependent Claim
332 words
In a machine for abrading by use of an extruding medium; a base including a table work top; an elongated head frame extending across said table top and of a predetermined width and height; means for guiding said frame for vertical movement toward and away from said table top; said guiding means including two vertically extending guides; one near each end of said frame; each of said guides being strong and rigid and including two parallel linear vertically extending guide ways spaced apart approximately equal to said predetermined width; bracing means rigidly connecting said guide ways; plural guide follower members mounted on said head frame in position to snugly engage said guide ways; some of said guide members near each end of said frame being engageable between said head frame and said guide ways at spaced vertical levels; some of said guide members having engagement with said ways preventing relative movement of said head frame in a first horizontal direction relative to said ways; other of said guide members having engagement with said ways preventing relative movement of said head frame in a second horizontal direction relative to said ways at right angles to said first direction; upper and lower vertically oriented positively actuated medium driving devices axially aligned; each of said devices arranged to discharge medium toward and into the other device through a communicating opening in a workpiece clamped between said devices; said uPper device being rigidly mounted in in said head frame; said lower device being rigidly mounted in said base; power means drivingly connected with each of said medium driving devices; said power means carried by said base; and clamping means connected at opposite ends of said head frame for moving said head frame to cause travel of said upper medium driving device towards and away from said lower medium driving device to clamp and release a workpiece between them; said last named means being so constructed and arranged as to maintain a workpiece clamped under heavy pressure.
Claim 3
Dependent Claim
73 words
A machine as defined in claim 1; including a massive support rigidly secured to said base in vertical registration beneath said elongated head frame and contiguous to the lower surface of said table work top; said lower medium driving device being rigidly mounted in said support; said support extending at its opposite ends beneath said guides in their entirety and eliminating substantially all vertical flexing of said lower medium driving device carried thereby.
Claim 4
Dependent Claim
39 words
A machine as defined in claim 2; wherein said head is strongly trussed and braced and forms a massive beam between said clamping means connections and eliminating substantially all vertical flexing of said upper medium driving device carried thereby.
Claim 5
Dependent Claim
31 words
A machine as defined in claim 1; wherein said clamping means comprises two vertically oriented hydraulically operated cylinder and piston jacks operatively connected one near each end of said head frame.
Claim 6
Dependent Claim
68 words
A machine as defined in claim 4; including control circuit means operatively connected with said power means for said medium driving devices to automatically reciprocate said driving devices alternately upward and downward; and means in said control circuit means normally in circuit non-energizing position and responsive to pressure, at a predetermined value, exerted by said clamping means in work-clamping position for causing energization of said control circuit means.
Claim 7
Dependent Claim
90 words
A machine as defined in claim 1; including control circuit means operatively connected with said power means for said medium driving devices to automatically reciprocate said driving devices alternately upward and downward; detector means operatively associated between said head frame and said guides actuated only by vertical tilting of said head frame relative to said guides; said detector means including a normally closed switch in said control circuit means; and said tilting of said head frame being operative to open said switch and to prevent further operation of said machine.
Claim 8
Dependent Claim
20 words
A machine as defined in claim 1; wherein said guide follower members are rollers rotatably mounted on said head frame.
Claim 9
Dependent Claim
47 words
A machine as defined in claim 7; wherein each of said guides is a vertically oriented U-shape channel having a web and two flanges opening inwardly; the edges of said flanges providing said guide ways; and said web providing said bracing means rigidly connecting said guide ways.
Claim 10
Dependent Claim
143 words
A machine as defined in claim 8; some of said guide follower rollers having cylindrical peripheries; some of said rollers having peripheries V-shape in radial section; said guide follower rollers having cylindrical peripheries at both levels at one end of, and at one side of, said head frame; said guide follower rollers having V-shape peripheries at both levels at said one end of, and at the other side of, said head frame; and said guide follower rollers having V-shape peripheries at both levels at the other end of, and at said one side of, said head frame; and said guide follower rollers having cylindrical peripheries at both levels at said other end of, and at said other side of, said head frame; the edges of said channel flanges engaged by said guide follower rollers being complementary to the periphery of the associated rollers.
Claim 11
Dependent Claim
15 words
A machine as defined in claim 1; wherein said guide follower members are sliding shoes.
Claim 12
Dependent Claim
51 words
A machine as defined in claim 10; wherein each of said guides is a vertically oRiented U-shape channel having a web and two flanges opening inwardly, the outer face of said web and said flanges providing said guide ways; and said web providing said bracing means rigidly connecting said guide ways.
Claim 13
Dependent Claim
44 words
A machine as defined in claim 11; wherein said shoes are rigid plates having facings engaging said web and said flanges; and said facings chosen from the group consisting of tetrafluoroethylene polymer, Nylon and a soft bearing material having a hardness similar to bronze.
Claim 14
Dependent Claim
29 words
A machine as defined in claim 11; wherein the portions of said faces of said web and of said flanges engaged by said shoes are provided with smooth surfaces.
References Cited (Backward Citations)
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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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |