Patent US3855901A successfully refreshed from Google Patents.
US3855901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broaching machine
Assignee: Acme Precision Products Inc
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Filing: 1973-10-15
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Granted: 1974-12-24
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Expires: 1993-10-15
Abstract
Abstract A broaching machine comprising a base and an endless broaching chain mounted on said base. A plurality of carriers are mounted at longitudinally spaced points on the chain for supporting a workpiece or broaching tools. A mounting fixture is positioned along a portion of the path of the carriers for supporting the workpiece or broaching tools. A slideway is provided along the path of the carriers adjacent the fixture and the slideway and carriers have complementary surfaces. Each of said surfaces of the slideway has longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to the cavities, the length and diameter of the capillaries and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, the fluid flows to the cavity freely and is at atmospheric pressure in the cavity. The length of each carrier is such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway and the length of the slideway is such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway. By supplying fluid to said cavities at least when a carrier is on said slideway each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between the complementary surfaces of said slideway and carrier.
Inventors
- 👤 V Girardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:03
CPC Classifications
F; F16; F16C; F16C32/00; F16C32/06; B; B23; B23D; B23D41/00; B23D41/02; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/38; F16C29/00; F16C29/02; F16C29/025; F16C2322/00; F16C2322/39; Y; Y10; Y10T; Y10T409/00; Y10T409/40; Y10T409/4007; Y10T409/40105; Y10T409/403325; Y10T409/4035
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
269 words
In a broaching machine, the combination comprising a base, an endless broaching chain mounted on said base, a plurality of carriers mounted at longitudinally spaced points on said chain for supporting one of a workpiece and a broaching tool, a mounting fixture positioned along a portion of the path of the carriers for supporting the other of a workpiece and broaching tool, means defining a slideway along the path of the carriers adjacent the fixture, said slideway having a plurality of planar surfaces for supporting and guiding said carriers, said carriers having complementary surfaces to said slideway planar surfaces, each of said slideway planar surfaces having longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to said cavities, the length and diameter of the capillary fluid passages and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, fluid can flow to the cavity freely and be at atmospheric pressure in the cavity, the length of each carrier being such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway, the length of the slideway being such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway, and means for supplying fluid to said cavities at least when a carrier is on said slideway such that each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between the complementary surfaces of said slideway and carrier.
Claim 2
Dependent Claim
269 words
In a broaching machine, the combination comprising a base, an endless broaching chain mounted on said base, a plurality of carriers mounted at longitudinally spaced points on said chain for supporting one of a workpiece and a broaching tool, a mounting fixture positioned along a portion of the path of the carriers for supporting the other of a workpiece and broaching tool, means defining a slideway along the path of the carriers adjacent the fixture, said slideway having a plurality of planar surfaces for supporting and guiding said carriers, said carriers having complementary surfaces to said slideway planar surfaces, each of said slideway planar surfaces having longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to said cavities, the length and diameter of the capillary fluid passages and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, fluid can flow to the cavity freely and be at atmospheric pressure in the cavity, the length of each carrier being such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway, the length of the slideway being such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway, and means for supplying fluid to said cavities at least when a carrier is on said slideway such that each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between the complementary surfaces of said slideway and carrier.
Claim 3
Dependent Claim
21 words
The combination set forth in claim 1 wherein the length of said slideway is many times the length of said carrier.
Claim 4
Dependent Claim
20 words
The combination set forth in claim 1 wherein said cavities are elongated in a direction of movement of the carrier.
Claim 5
Dependent Claim
25 words
The combination set forth in claim 1 wherein said capillary fluid passages for supplying fluid to said cavities are supplied through one or more manifolds.
Claim 6
Dependent Claim
258 words
In a broaching machine, the combination comprising a base, an endless broaching chain mounted on said base, a plurality of carriers mounted at longitudinally spaced points on said chain for supporting a broaching tool, a mounting fixture positioned along a portion of the path of the carriers for supporting a workpiece, means defining a slideway along the path of the carriers adjacent the fixture, said slideway having a plurality of planar surfaces for supporting and guiding said carriers, said carriers having complementary surfaces to said slideway planar surfaces, each of said slideway planar surfaces having longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to said cavities, the length and diameter of the capillary fluid passages and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, fluid can flow to the cavity freely and be at atmospheric pressure in the cavity, the length of each carrier being such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway, the length of the slideway being such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway, and means for supplying fluid to said cavities at least when a carrier is on said slideway such that each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between the complementary surfaces of said slideway and carrier.
Claim 7
Dependent Claim
258 words
In a broaching machine, the combination comprising a base, an endless broaching chain mounted on said base, a plurality of carriers mounted at longitudinally spaced points on said chain for supporting a broaching tool, a mounting fixture positioned along a portion of the path of the carriers for supporting a workpiece, means defining a slideway along the path of the carriers adjacent the fixture, said slideway having a plurality of planar surfaces for supporting and guiding said carriers, said carriers having complementary surfaces to said slideway planar surfaces, each of said slideway planar surfaces having longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to said cavities, the length and diameter of the capillary fluid passages and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, fluid can flow to the cavity freely and be at atmospheric pressure in the cavity, the length of each carrier being such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway, the length of the slideway being such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway, and means for supplying fluid to said cavities at least when a carrier is on said slideway such that each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between the complementary surfaces of said slideway and carrier.
Claim 8
Dependent Claim
21 words
The combination set forth in claim 5 wherein the length of said slideway is many times the length of said carrier.
Claim 9
Dependent Claim
20 words
The combination set forth in claim 5 wherein said cavities are elongated in a direction of movement of the carrier.
Claim 10
Dependent Claim
25 words
The combination set forth in claim 5 wherein said capillary fluid passages for supplying fluid to said cavities are supplied through one or more manifolds.
Claim 11
Dependent Claim
310 words
In a broaching machine, the combination comprising a base, an endless broaching chain mounted on said base, a plurality of carriers mounted at longitudinally spaced points on said chain for supporting one of a workpiece, and a broaching tool, a mounting fixture positioned along a portion of the path of the carriers for supporting the other of a workpiece and broaching tool, means defining a slideway along the path of the carriers adjacent the fixture, said slideway having a plurality of planar surfaces for supporting and guiding said carriers, said carriers having complementary surfaces to said slideway planar surfaces, each of said slideway planar surfaces having longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to said cavities, the length and diameter of the capillary fluid passages and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, fluid can flow to the cavity freely and be at atmospheric pressure in the cavity, the length of each carrier being such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway, the length of the slideway being such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway, and means for supplying fluid to said cavities at least when a carrier is on said slideway such that each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between complementary surfaces of said slideway and carrier, the length of said slideway being many times the length of said carrier, said cavities being elongated in a direction of movement of the carrier, said capillary fluid passages for supplying fluid to said cavities being supplied through one or more manifolds.
Claim 12
Dependent Claim
310 words
In a broaching machine, the combination comprising a base, an endless broaching chain mounted on said base, a plurality of carriers mounted at longitudinally spaced points on said chain for supporting one of a workpiece, and a broaching tool, a mounting fixture positioned along a portion of the path of the carriers for supporting the other of a workpiece and broaching tool, means defining a slideway along the path of the carriers adjacent the fixture, said slideway having a plurality of planar surfaces for supporting and guiding said carriers, said carriers having complementary surfaces to said slideway planar surfaces, each of said slideway planar surfaces having longitudinally spaced cavities therein and capillary fluid passages associated therewith for supplying fluid to said cavities, the length and diameter of the capillary fluid passages and the size of the cavities being such that when a cavity is uncovered due to the absence of a carrier thereover, fluid can flow to the cavity freely and be at atmospheric pressure in the cavity, the length of each carrier being such that it covers a plurality of longitudinally spaced cavities as it is moved past the work station along said slideway, the length of the slideway being such that a plurality of cavities are uncovered at any moment of time during which a carrier is moved along said slideway, and means for supplying fluid to said cavities at least when a carrier is on said slideway such that each carrier is supported in stable, accurate frictionless relation to the slideway by fluid flow from said cavities between complementary surfaces of said slideway and carrier, the length of said slideway being many times the length of said carrier, said cavities being elongated in a direction of movement of the carrier, said capillary fluid passages for supplying fluid to said cavities being supplied through one or more manifolds.
References Cited (Backward Citations)
US3512848A
Cited
US3568569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |