US2731713A - Method of making a focused multicell - Google Patents
Method of making a focused multicell Download PDFInfo
- Publication number
- US2731713A US2731713A US257694A US25769451A US2731713A US 2731713 A US2731713 A US 2731713A US 257694 A US257694 A US 257694A US 25769451 A US25769451 A US 25769451A US 2731713 A US2731713 A US 2731713A
- Authority
- US
- United States
- Prior art keywords
- cells
- multicell
- roll
- focused
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49082—Resistor making
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4981—Utilizing transitory attached element or associated separate material
Definitions
- This invention relates to the met'hod of making a focused multicell; More particularly, the invention relates to a method for preparing a multicell in which. all of the cell units are so oriented that they are focused at a point a predetermined distance from the unit.
- a multicell is a the manner of the cells making up a honeycomb. 'The group of cells in a multicell may have their axes positioned in parallel alignment/but this is not necessary. in certain optical apparatus, it is very desirable to have a multicell in which the axes of all of the individual cells are focused on a sing-le point. In the past the preparation of a multicell made up of a great many very minute cells which have their axes focused on a single point has represented a very difiicult problem.
- Another object of this invention is to provide a method forproducing a focusing multicell made of many very small individual cell units. Another object of the invention is to produce amulticell heating element having a great deal of radiating surface area.
- Another object of the invention is to provide a method for fabricating a focusing multicell wherein there is very little likelihood that any of the cells will buckle during fabrication.
- Fig. 1 is a diagrammatic view of the initial step followed in producing a multicell
- Fig. 2 illustrates the forming step performed on the multicell
- Fig. 3 illustrates a s'intering operation followed in fixing the cells in position
- Fig 4 illustrates the step of filling the individual eel-ls with liquid
- Fig. 5 illustrates a freezing uicl in the cells is solidified
- Fig. 6 illustrates the step followed in focusing the individual cell units of the multicell
- Fig. 7 shows the finished multicell of cell units in position.
- the ends of the roll may then be compressed to restore the initialfiat configuration.
- This pressing operation realigns and reorients the axes of the individual cells so that they are focused on. a central axial point.
- Fig. 1 shows apair of rolls cross section. Strips 10 and12 are then cowound on a roll 13 where the corrugations of the strip 10 form a plurality of cells which are separated by the strip 12.
- the strips 10 and 12 are cut and the loosely assembled roll placed upon a form 14 as shown in Fig. 2.
- the form 14 has a convex surface, the degree of convexity dependingupon the focal length which it is desired to have in the final multicell.- As the degree of convexity decreases, the focal length of the final multicell increases.
- the ice filled multicell unit is placed on an arbor press between two fiat plates as shown in Fig. 6
- the strips 10 and 12 will normally be of the same material, it is not the temperature of a 300 cu. ft. room 10 F. in twenty minutes.
- a multicell may be made up of very long cells (the width of the gears used for making the corrugated foil may be of practically any dimension), and the size of the gear tooth may be of any fineness down to 100 pitch or smaller. Such a multicell may be used very satisfactorily as a collimator for use in conjunction with X-rays.
- multicells of very soft metal such as pure lead and cadmium
- a foil of this substance on either side of a thin foil of steel or aluminum.
- the soft material becomes intimately formed in contact with the harder core, and as a result, it is easy to make 'a strong multicell having a softer metal effectively sup- 1.
- the method of preparing a multicell which com- 'prises winding a corrugated strip along with a flat strip to form a roll having a plurality of cells in parallel axial alignment, deforming said roll to give it a concave configuration on one side and a convex configuration on the other, heating said roll to fix said roll in the concaveconvex position, filling said cells with liquid, solidifying said liquid, and forcing said solidfied liquid-filled roll to a flat-end configuration whereby the axes of said cells are brought to a substantially common focus.
- the method of preparing a multicell which comprises winding a corrugated strip of metal coincidentally with a ,fiat strip to form a roll having a plurality of cells in axial alignment with the axis of the roll, forming said roll to provide a concave surface at one end of the cells and a convex surface at the other, sintering said roll to fix said concave-convex configuration, filling said cells with liquid, solidifying said liquid, and deforming said roll while the liquid is melting to flatness at the ends of said cells whereby said cells are axially focused.
- the method of preparing a multicell which comprises cowinding a thin corrugated metal strip with a thin flat strip to form a roll containing a plurality of thinwalled cells in parallel axial alignment with the axis of said roll, displacing sa'd cells longitudinally whereby the deforming said roll to V side of said roll at one end of said cells has a concave configuration-"and the side of said roll at the other end of said cells has a convex configuration, heating said roll to fix said cells in the concave-convex configuration, filling said cells with water, freezing said water, and pressing said roll to flatness at the ends thereof while the frozen water is melting whereby the axes of said cells are focused upon a common point.
- the method of making a focused multicell which comprises winding a corrugated strip along with a fiat strip to form a roll having a plurality of cells in parallel relatively slidable axial alignment, deforming said roll to give a concave configuration on one side and a convex configuration on the other, heating said roll to bond the cells togetherin the concave-convex position, and forcing said bonded roll to a flattened configuration whereby the axes of said cells are reoriented to a substantially common focus.
- the method of changing the relative axial orientation of the individual cells of a corrugated thin-walled multicell comprises filling the cells with liquid, freezing t e liquid to rigidity the multicell, and deforming the multicell by an axially applied force while the frozen liquid is melting.
- the method of preparing an axially focused multicell from a fiat cellular metal structure of the type having a plurality of open cells in relatively slidable parallel axial alignment comprises applying an axial force upon said structure to deform said structure to a convex surface at one end of the cells and a concave surface at the other end, heating said structure to bond said cells in said concave-convex configuration, filling the cells with water, solidifying the water, and applying an axial force upon said structure while the solidified water is melting to deform said structure back to its original fiat configuration whereby the individual cells of the structure are reoriented in axially focused alignment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
Jan. 24, 1956 v. J. SCHAEFER METHOD OF MAKING A FOCUSED MULTICELL Filed Nov. 23
Ifiventor:
e g 6% a m Tr m s A L w H mm V 2,731,713 METHOD OF MAKING A FOCUSED MULTICELL Vincent. J; Sc'h'ae'fer, Schenectady, N. Y., assignor to General Electric Company, a corporation of New York Application November 23,1951, Serial No. 257,694 8 Claims. or. 29-423 This invention relates to the met'hod of making a focused multicell; More particularly, the invention relates to a method for preparing a multicell in which. all of the cell units are so oriented that they are focused at a point a predetermined distance from the unit.
A multicell is a the manner of the cells making up a honeycomb. 'The group of cells in a multicell may have their axes positioned in parallel alignment/but this is not necessary. in certain optical apparatus, it is very desirable to have a multicell in which the axes of all of the individual cells are focused on a sing-le point. In the past the preparation of a multicell made up of a great many very minute cells which have their axes focused on a single point has represented a very difiicult problem.
it is an object of this invention to provide a method forproducing a focusing multicell made of many very small individual cell units. Another object of the invention is to produce amulticell heating element having a great deal of radiating surface area.
Another object of the invention is to provide a method for fabricating a focusing multicell wherein there is very little likelihood that any of the cells will buckle during fabrication.
Other objects of the invention will be apparent from a perusal of the following specification considered in conjunction with the attached drawings wherein:
Fig. 1 is a diagrammatic view of the initial step followed in producing a multicell;
Fig. 2 illustrates the forming step performed on the multicell; I
Fig. 3 illustrates a s'intering operation followed in fixing the cells in position;
Fig 4 illustrates the step of filling the individual eel-ls with liquid;-
Fig. 5 illustrates a freezing uicl in the cells is solidified;
Fig. 6 illustrates the step followed in focusing the individual cell units of the multicell; and
Fig. 7 shows the finished multicell of cell units in position.
In accordance with my invention, a strip of corrugated process whereby the liqstrip on top of the corrugated strip,
convex. A sintering operation will then fix and bond the individual cells together so as to retain this concaveconvex conformations. If the individual cells of the group of cells oriented somewhat in with the plurality 2,731,713 Patented Jan. 24, 1956 multicell are thin-walled and fragile, they may be filled with liquid and the liquid frozen, thereby imparting to the walls of the individual cells a considerable resistance to buckling.
The ends of the roll may then be compressed to restore the initialfiat configuration. This pressing operation realigns and reorients the axes of the individual cells so that they are focused on. a central axial point.
Referring to the drawings, Fig. 1 shows apair of rolls cross section. Strips 10 and12 are then cowound on a roll 13 where the corrugations of the strip 10 form a plurality of cells which are separated by the strip 12.
The size of the individual cells making up the multicell size of the teeth of the gears 11.
very easily by stopping the winding process when the desired diameter has been reached;
I When the multicell 13 has attained the desired diameter the strips 10 and 12 are cut and the loosely assembled roll placed upon a form 14 as shown in Fig. 2. The form 14 has a convex surface, the degree of convexity dependingupon the focal length which it is desired to have in the final multicell.- As the degree of convexity decreases, the focal length of the final multicell increases.
might tend to buckle them.
After freezing, the ice filled multicell unit is placed on an arbor press between two fiat plates as shown in Fig. 6
product is illustrated in Fig. 7.
While the strips 10 and 12 will normally be of the same material, it is not the temperature of a 300 cu. ft. room 10 F. in twenty minutes.
A multicell may be made up of very long cells (the width of the gears used for making the corrugated foil may be of practically any dimension), and the size of the gear tooth may be of any fineness down to 100 pitch or smaller. Such a multicell may be used very satisfactorily as a collimator for use in conjunction with X-rays. My
method may be used to fabricate multicells of very soft metal, such as pure lead and cadmium, by folding a foil of this substance on either side of a thin foil of steel or aluminum. When passed through the corrugating rolls, the soft material becomes intimately formed in contact with the harder core, and as a result, it is easy to make 'a strong multicell having a softer metal effectively sup- 1. The method of preparing a multicell which com- 'prises winding a corrugated strip along with a flat strip to form a roll having a plurality of cells in parallel axial alignment, deforming said roll to give it a concave configuration on one side and a convex configuration on the other, heating said roll to fix said roll in the concaveconvex position, filling said cells with liquid, solidifying said liquid, and forcing said solidfied liquid-filled roll to a flat-end configuration whereby the axes of said cells are brought to a substantially common focus.
2. The method of preparing a multicell which comprises winding a corrugated strip of metal coincidentally with a ,fiat strip to form a roll having a plurality of cells in axial alignment with the axis of the roll, forming said roll to provide a concave surface at one end of the cells and a convex surface at the other, sintering said roll to fix said concave-convex configuration, filling said cells with liquid, solidifying said liquid, and deforming said roll while the liquid is melting to flatness at the ends of said cells whereby said cells are axially focused.
3. The method of preparing a multicell which comprises corrugating a strip of bendable material, winding the corrugated strip together with a smooth strip to form a roll of cellular construction, break the cross-sectional planar alignment of the cells,
sintering the roll to fix the changed planar alignment of the cells, filling the cells with liquid, solidifying the liquid, and applying stress to said solidified liquid-filled roll whereby said cells are restored to their original crosssectional planar alignment and said cells are axially focused.
4. The method of preparing a multicell which comprises cowinding a thin corrugated metal strip with a thin flat strip to form a roll containing a plurality of thinwalled cells in parallel axial alignment with the axis of said roll, displacing sa'd cells longitudinally whereby the deforming said roll to V side of said roll at one end of said cells has a concave configuration-"and the side of said roll at the other end of said cells has a convex configuration, heating said roll to fix said cells in the concave-convex configuration, filling said cells with water, freezing said water, and pressing said roll to flatness at the ends thereof while the frozen water is melting whereby the axes of said cells are focused upon a common point.
5. A method as claimed in claim 4 wherein the metal strips are of the order of 0.001 inch in thickness.
6. The method of making a focused multicell which comprises winding a corrugated strip along with a fiat strip to form a roll having a plurality of cells in parallel relatively slidable axial alignment, deforming said roll to give a concave configuration on one side and a convex configuration on the other, heating said roll to bond the cells togetherin the concave-convex position, and forcing said bonded roll to a flattened configuration whereby the axes of said cells are reoriented to a substantially common focus.
7. The method of changing the relative axial orientation of the individual cells of a corrugated thin-walled multicell, which method comprises filling the cells with liquid, freezing t e liquid to rigidity the multicell, and deforming the multicell by an axially applied force while the frozen liquid is melting.
8. The method of preparing an axially focused multicell from a fiat cellular metal structure of the type having a plurality of open cells in relatively slidable parallel axial alignment, which method comprises applying an axial force upon said structure to deform said structure to a convex surface at one end of the cells and a concave surface at the other end, heating said structure to bond said cells in said concave-convex configuration, filling the cells with water, solidifying the water, and applying an axial force upon said structure while the solidified water is melting to deform said structure back to its original fiat configuration whereby the individual cells of the structure are reoriented in axially focused alignment.
References Cited in the file of this patent UNITED STATES PATENTS 745,759 Baehr Dec. 1, 1903 1,121,859 ,Messiter Dec. 22, 1914 1,275,785 Stratton Aug. 13, 1918 1,588,976 McBlain June 15, 1926 1,976,871 Wine Oct. 16, 1934 2,075,815 .Knox Apr. 6, 1937 2,163,590 De Ganahl June 27, 1939 2,167,215 Leary July 25, 1939 2,212,481 Sendzimir Aug. 20, 1940 2,366,141 Alderfer Dec. 26, 1944 2,393,548 'McCoy Jan. 22, 1946 2,487,257 Morgan Nov. 8, 1949 2,498,674 Graham et al. Feb. 28, 1950 FOREIGN PATENTS Great Britain Oct. 29, 1940
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US257694A US2731713A (en) | 1951-11-23 | 1951-11-23 | Method of making a focused multicell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US257694A US2731713A (en) | 1951-11-23 | 1951-11-23 | Method of making a focused multicell |
Publications (1)
Publication Number | Publication Date |
---|---|
US2731713A true US2731713A (en) | 1956-01-24 |
Family
ID=22977362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US257694A Expired - Lifetime US2731713A (en) | 1951-11-23 | 1951-11-23 | Method of making a focused multicell |
Country Status (1)
Country | Link |
---|---|
US (1) | US2731713A (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2841866A (en) * | 1954-02-10 | 1958-07-08 | Daystrom Inc | Method of forming thin-walled tubing into a desired shape |
US2855664A (en) * | 1955-12-21 | 1958-10-14 | Rohr Aircraft Corp | Method of machining honeycomb core |
US2988809A (en) * | 1956-10-08 | 1961-06-20 | North American Aviation Inc | Fabrication procedure for parts having low density core |
US3032635A (en) * | 1960-10-03 | 1962-05-01 | August L Kraft | Heater and utilization system for converting small quantities of fusible solids |
US3064345A (en) * | 1959-08-27 | 1962-11-20 | Northrop Corp | Process for chucking porous materials |
US3078560A (en) * | 1959-11-23 | 1963-02-26 | John F Vosburg | Method of cutting rubber and the like |
US3086625A (en) * | 1959-03-19 | 1963-04-23 | Triar Inc | Cellular core and method of making same |
US3123905A (en) * | 1964-03-10 | Method of making honeycomb core | ||
US3133346A (en) * | 1961-06-02 | 1964-05-19 | Armto Steel Corp | Method for bonding metals |
US3196533A (en) * | 1963-07-10 | 1965-07-27 | Martin Marietta Corp | Method for forming honeycomb materials |
US3265865A (en) * | 1963-10-09 | 1966-08-09 | Armstrong Cork Co | Electrical duct heater |
US3392759A (en) * | 1965-09-16 | 1968-07-16 | Barr & Stroud Ltd | Electrically heated windows or the like |
US3413708A (en) * | 1966-09-12 | 1968-12-03 | Hexcel Products Inc | Process for machining expanded honeycomb |
US3919559A (en) * | 1972-08-28 | 1975-11-11 | Minnesota Mining & Mfg | Louvered film for unidirectional light from a point source |
US3921000A (en) * | 1973-02-16 | 1975-11-18 | Searle & Co | Gamma ray camera system with corrugated collimators |
US3936340A (en) * | 1970-07-07 | 1976-02-03 | G. D. Searle & Co. | Method for making corrugated collimators for radiation imaging devices |
US3937969A (en) * | 1973-05-07 | 1976-02-10 | G. D. Searle & Co. | Gamma ray camera system with corrugated collimators |
US3988589A (en) * | 1975-07-28 | 1976-10-26 | Engineering Dynamics Corporation | Methods of collimator fabrication |
US4181839A (en) * | 1977-08-26 | 1980-01-01 | Cardiac Medical Sciences Corp. | Multi-view collimator |
US4185195A (en) * | 1977-12-30 | 1980-01-22 | Emi Limited | Construction of collimators and/or detectors for penetrating radiation |
US4272668A (en) * | 1979-11-13 | 1981-06-09 | Armstrong Cork Company | Small round air stream heating unit |
US4414428A (en) * | 1979-05-29 | 1983-11-08 | Teledyne Industries, Inc. | Expanded metal containing wires and filaments |
US4535589A (en) * | 1981-05-26 | 1985-08-20 | Nippon Soken, Inc. | Exhaust gas cleaning device for internal combustion engine |
US4562630A (en) * | 1980-10-21 | 1986-01-07 | Gunnar Larsson | Method for the manufacture of heat exchanger elements |
FR2665651A1 (en) * | 1990-08-10 | 1992-02-14 | Spirec | METHOD AND DEVICE FOR PROVIDING THE PARTITION OF A FLUID VEIN. |
US9199349B2 (en) | 2012-12-07 | 2015-12-01 | Rohr, Inc. | Three-dimensional honeycomb core machining apparatus and method |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US745759A (en) * | 1902-08-06 | 1903-12-01 | Nat Tube Co | Resisting device. |
US1121859A (en) * | 1912-11-08 | 1914-12-22 | Electric Weighing Company | Composite magnetizable material. |
US1275785A (en) * | 1915-11-09 | 1918-08-13 | Electric Controller & Mfg Co | Resistance unit. |
US1588976A (en) * | 1923-04-24 | 1926-06-15 | Mcblain James | Electrical apparatus for generating ozone |
US1976871A (en) * | 1931-12-23 | 1934-10-16 | William E Wine | Apparatus for making a volute spring |
US2075815A (en) * | 1934-09-29 | 1937-04-06 | Harry A Knox | Method of forming a volute spring |
US2163590A (en) * | 1937-09-09 | 1939-06-27 | Fleetwings Inc | Method and apparatus for welding corrugated sheets to flat sheets |
US2167215A (en) * | 1937-04-24 | 1939-07-25 | American Mach & Foundry | Sponge rubber roller and method of making the same |
US2212481A (en) * | 1936-12-12 | 1940-08-20 | American Rolling Mill Co | Multicellular expanded material and process of manufacturing same |
GB528385A (en) * | 1939-04-26 | 1940-10-29 | Cecil Gordon Vokes | Improvements in or relating to means for straightening the flow of gases in pipes, conduits or the like |
US2366141A (en) * | 1943-06-25 | 1944-12-26 | Edward D Andrews | Method of making pressure containers |
US2393548A (en) * | 1944-09-01 | 1946-01-22 | Bell Telephone Labor Inc | Winding machine |
US2487257A (en) * | 1946-11-23 | 1949-11-08 | Warren Webster & Co | Method of expanding containers by freezing liquid therein |
US2498674A (en) * | 1946-06-11 | 1950-02-28 | Erwin W Graham | Method of winding electrical resistance wire strain gauges |
-
1951
- 1951-11-23 US US257694A patent/US2731713A/en not_active Expired - Lifetime
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US745759A (en) * | 1902-08-06 | 1903-12-01 | Nat Tube Co | Resisting device. |
US1121859A (en) * | 1912-11-08 | 1914-12-22 | Electric Weighing Company | Composite magnetizable material. |
US1275785A (en) * | 1915-11-09 | 1918-08-13 | Electric Controller & Mfg Co | Resistance unit. |
US1588976A (en) * | 1923-04-24 | 1926-06-15 | Mcblain James | Electrical apparatus for generating ozone |
US1976871A (en) * | 1931-12-23 | 1934-10-16 | William E Wine | Apparatus for making a volute spring |
US2075815A (en) * | 1934-09-29 | 1937-04-06 | Harry A Knox | Method of forming a volute spring |
US2212481A (en) * | 1936-12-12 | 1940-08-20 | American Rolling Mill Co | Multicellular expanded material and process of manufacturing same |
US2167215A (en) * | 1937-04-24 | 1939-07-25 | American Mach & Foundry | Sponge rubber roller and method of making the same |
US2163590A (en) * | 1937-09-09 | 1939-06-27 | Fleetwings Inc | Method and apparatus for welding corrugated sheets to flat sheets |
GB528385A (en) * | 1939-04-26 | 1940-10-29 | Cecil Gordon Vokes | Improvements in or relating to means for straightening the flow of gases in pipes, conduits or the like |
US2366141A (en) * | 1943-06-25 | 1944-12-26 | Edward D Andrews | Method of making pressure containers |
US2393548A (en) * | 1944-09-01 | 1946-01-22 | Bell Telephone Labor Inc | Winding machine |
US2498674A (en) * | 1946-06-11 | 1950-02-28 | Erwin W Graham | Method of winding electrical resistance wire strain gauges |
US2487257A (en) * | 1946-11-23 | 1949-11-08 | Warren Webster & Co | Method of expanding containers by freezing liquid therein |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3123905A (en) * | 1964-03-10 | Method of making honeycomb core | ||
US2841866A (en) * | 1954-02-10 | 1958-07-08 | Daystrom Inc | Method of forming thin-walled tubing into a desired shape |
US2855664A (en) * | 1955-12-21 | 1958-10-14 | Rohr Aircraft Corp | Method of machining honeycomb core |
US2988809A (en) * | 1956-10-08 | 1961-06-20 | North American Aviation Inc | Fabrication procedure for parts having low density core |
US3086625A (en) * | 1959-03-19 | 1963-04-23 | Triar Inc | Cellular core and method of making same |
US3064345A (en) * | 1959-08-27 | 1962-11-20 | Northrop Corp | Process for chucking porous materials |
US3078560A (en) * | 1959-11-23 | 1963-02-26 | John F Vosburg | Method of cutting rubber and the like |
US3032635A (en) * | 1960-10-03 | 1962-05-01 | August L Kraft | Heater and utilization system for converting small quantities of fusible solids |
US3133346A (en) * | 1961-06-02 | 1964-05-19 | Armto Steel Corp | Method for bonding metals |
US3196533A (en) * | 1963-07-10 | 1965-07-27 | Martin Marietta Corp | Method for forming honeycomb materials |
US3265865A (en) * | 1963-10-09 | 1966-08-09 | Armstrong Cork Co | Electrical duct heater |
US3392759A (en) * | 1965-09-16 | 1968-07-16 | Barr & Stroud Ltd | Electrically heated windows or the like |
US3413708A (en) * | 1966-09-12 | 1968-12-03 | Hexcel Products Inc | Process for machining expanded honeycomb |
US3936340A (en) * | 1970-07-07 | 1976-02-03 | G. D. Searle & Co. | Method for making corrugated collimators for radiation imaging devices |
US3919559A (en) * | 1972-08-28 | 1975-11-11 | Minnesota Mining & Mfg | Louvered film for unidirectional light from a point source |
US3921000A (en) * | 1973-02-16 | 1975-11-18 | Searle & Co | Gamma ray camera system with corrugated collimators |
US3937969A (en) * | 1973-05-07 | 1976-02-10 | G. D. Searle & Co. | Gamma ray camera system with corrugated collimators |
US3988589A (en) * | 1975-07-28 | 1976-10-26 | Engineering Dynamics Corporation | Methods of collimator fabrication |
US4181839A (en) * | 1977-08-26 | 1980-01-01 | Cardiac Medical Sciences Corp. | Multi-view collimator |
US4185195A (en) * | 1977-12-30 | 1980-01-22 | Emi Limited | Construction of collimators and/or detectors for penetrating radiation |
US4414428A (en) * | 1979-05-29 | 1983-11-08 | Teledyne Industries, Inc. | Expanded metal containing wires and filaments |
US4272668A (en) * | 1979-11-13 | 1981-06-09 | Armstrong Cork Company | Small round air stream heating unit |
US4562630A (en) * | 1980-10-21 | 1986-01-07 | Gunnar Larsson | Method for the manufacture of heat exchanger elements |
US4535589A (en) * | 1981-05-26 | 1985-08-20 | Nippon Soken, Inc. | Exhaust gas cleaning device for internal combustion engine |
FR2665651A1 (en) * | 1990-08-10 | 1992-02-14 | Spirec | METHOD AND DEVICE FOR PROVIDING THE PARTITION OF A FLUID VEIN. |
WO1992002317A1 (en) * | 1990-08-10 | 1992-02-20 | Spirec | Method and device for splitting a stream of fluid |
US9199349B2 (en) | 2012-12-07 | 2015-12-01 | Rohr, Inc. | Three-dimensional honeycomb core machining apparatus and method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2731713A (en) | Method of making a focused multicell | |
KR940010448B1 (en) | Cold roll formed structures and method and apparatus for producing same | |
US2815795A (en) | Honeycomb core material and method of fabricating the same | |
US2654686A (en) | Stiffened honeycomb core | |
US10486393B2 (en) | Devices including metal laminate with metallurgical bonds and reduced-density metal core layer | |
US3123446A (en) | Porous wall construction | |
US3191418A (en) | Method and apparatus forming serpentine fins | |
US2086857A (en) | Method of making bimetallic elements | |
PL113419B1 (en) | Method of rolling transversely finned pipes and workingtool therefor | |
US3222764A (en) | Method of making articles having base layers and integral fins projecting therefrom | |
US3478553A (en) | Method of forming sandwich panels | |
US3125806A (en) | Manufacture of composite metal tubes | |
US3239922A (en) | Method of making cellular structure | |
JP4431131B2 (en) | Wire rod and method of manufacturing the wire rod | |
DE2203206A1 (en) | Wart plate with open cells, for the production of building panels, walls and the like. suitable, as well as methods of making same | |
US2987810A (en) | Metal working | |
US2802509A (en) | Apparatus for the fabrication of ribbed structural members | |
JPS5938707B2 (en) | Grid for lead-acid batteries | |
CA2426678A1 (en) | Tapered fin and method of forming the same | |
JPS6150064B2 (en) | ||
US1984002A (en) | Method of and apparatus for corrugating metallic tubes | |
US618165A (en) | Island | |
JP3916925B2 (en) | Manufacturing method of lightweight rigid steel with high rigidity | |
DE1508820A1 (en) | Process for the production of dense or evenly porous foils and strips, pipes and profile parts made of metals, alloys or metallic or metal-glass composite materials by liquid drawing and / or rolling | |
JPS5971994A (en) | Heat exchanger plate blank material of multiple tubes and manufacture of the same |