US2568274A - Process for making bowling pins - Google Patents

Process for making bowling pins Download PDF

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US2568274A
US2568274A US53553A US5355348A US2568274A US 2568274 A US2568274 A US 2568274A US 53553 A US53553 A US 53553A US 5355348 A US5355348 A US 5355348A US 2568274 A US2568274 A US 2568274A
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pin
bowling
extending
impact
band
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Ray E Clark
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63D—BOWLING GAMES, e.g. SKITTLES, BOCCE OR BOWLS; INSTALLATIONS THEREFOR; BAGATELLE OR SIMILAR GAMES; BILLIARDS
    • A63D9/00—Pins
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S273/00—Amusement devices: games
    • Y10S273/02—Styrene
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S273/00—Amusement devices: games
    • Y10S273/04—Ethylene
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S273/00—Amusement devices: games
    • Y10S273/05—Vinyl
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/924—Coupled nut and bolt
    • Y10S411/947—Elastic-gripping action

Definitions

  • This invention relates to a process for makin bowling pins.
  • Bowling pinsmade entirely of wood when subjected to the impacting action of bowling balls are caused to be forcibly thrown against the hard wood of the alleys.
  • This battering of. the pins against the alleys soon results in the pins becoming nicked and gouged, especially at and around their bottom standing surface or base, thus making it difficult and often impossible to stand such worn pins upright on the alley surface.
  • Worn pins due to such wear become unbalanced and are, therefore, obnoxious to bowlers.
  • the bowling pins along the region of bowling ball impact in a comparatively short time of use show a marring or breaking away of the grain.
  • An object of the present invention is to provide a process for making a wooden bowling pin having a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, the band being fabricated of impact resistant material.
  • Another object of the present invention is to provide a process of making a wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, the base and band being fabricated of impact resistant material.
  • a further object of the present invention is to provide a process of making a wooden bowling pin having a base and a band spaced from the base fabricated of impact resistant material which is simple in execution and highly eflicient.
  • Figure 1 is a side elevational view of a typical bowling pin showing the undercutting of the base and the annular groove and communicating bores prior to the subjection of the pin to a molding operation with a moldable plastic material settable upon heating.
  • Figure 2 is a sectional view taken on 2-4 of Figure l.
  • Figure 3 is a sectional view taken on the line 3-3 of Figure 1.
  • Figure 4 is a side elevational sectionalview 01 the line a two part mold having the bowling pin of Figure I mounted therein, with the ejection mechanism containing a charge of the moldable plastic material settable upon heating in position to effect the injection stroke.
  • Figure 5 is a side elevational view, partly in section, of a bowling pin having the base and band of impact resistant material formed by the process of the present invention.
  • a conventional type wooden bowling pin l0, Figures 1 and 2 is cut away inwardly from the periphery of the pin adjacent its bottom II to form a cutaway bottom section l2 of the desired area-for forming the base of impact resistant material.
  • Formed in the periphery of the pin [0 at substantially the region of impact of a bowling ball therewith is an annular groove l3, the groove preferably tapering inwardly in cross section.
  • a bore [4 Positioned along the longitudinal axis of the pin I0 is a bore [4, the bore extending from the bottom of the pin to the annularly grooved region of the pin ID.
  • the annular groove I3 is interconnected with the longitudinal bore 14 by means of radial bores 15.
  • the first step in the process is forming the pin I0 witha cutaway bottom section, an annular groove extending about the periphery at substantially the region of impact of a bowling ball therewith, a bore positioned along the longitudinal axis and extending from the bottom of the pin to the annularly grooved region, a plurality of radial bores extending from the longitudinal bore and communicating with said groove, and passageways extending from the cutaway'section to and into the longitudinal bore.
  • the pin 10 having its main body formed as herein above described is then placed in a two part forming mold I8, Figure 4, so designed as to form the desired base and band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material.
  • the mold i8 is provided with an injection mechanism 19 for forcibly in jecting a liquid into such mold, the mechanism including a cylindrical container 20 for the reception of liquid material therein, a detachable cover 2
  • the liquid employed in the container 20 is a moldable plastic material settable upon heating, which material after setting and an in- 4 a pressure of from 1000 to 8000 pounds per square inch; and for casein, the temperature should be increased to 200 to 225 degrees Fahrenheit with a pressure of from 2000 to 2500 pounds per square tegral part of a bowling pin has the inherent 5 inch.
  • a reinforcing material such as property of being impact resistant or resistant to cotton flock, shredded canvas, should be admixed the impact of a bowling ball with the bowling pin. with each of the aforementioned resins when em- The liquid moldable plastic material settable upon ployed for this purpose.
  • heating may be non-cured rubber which has been
  • Other materials that may be employed as the preheated to a temperature such as to render l moldable plastic material settable upon heating it molten or liquid, for example a temperature are thermoplastics such as cellulose acetate, celluof 270 to 280 degrees Fahrenheit.
  • thermoplastics such as cellulose acetate, celluof 270 to 280 degrees Fahrenheit.
  • Thermoplastic gg gg Pressure Cellulose Acetate 340-500 3,000 to 30,000 lbs. per sq. inch.
  • Polyvinyl Chloride 300-400 10,000 to 30,000 lbs. per sq. inch.
  • Polyvinyl Butyral 250-340 15,000 to 30,000 lbs. per sq. inch.
  • Styrene Elastomer 355-410 15,000 to 20,000 lbs. per sq. inch.
  • olyethylene 325-375 4,500 to 20,000 lbs. per sq. inch.
  • Polyamide 510-600 5,000 to 50,000 lbs. per sq. inch.
  • the piston 23 is placed under increased pressure by any suitable means and the temperature of the molten rubber increaesd to the vulcanizing or curing temperature. Under these conditions of temperature and pressure the rubber is allowed to. set for a length of time depending upon the composition of the rubber. Preferably, the temperature is raised to a temperature of 290 to 300 degrees Fahrenheit and a pressure of 500 pounds per square inch. When the rubber has set, the temperature.
  • the resultant product is a completely formed bowling pin, Figure 5, having a base 25 and a band 26 extending about the periphery of the pin I0. at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material.
  • thermo setting resins like phenol formaldehyde, phenol furfural, urea formaldehyde, melamine formaldehyde, casein, may be used. Each of such resins would first have to be heated to a temperature to convert it to a molten state, and then the temperature would have to be increased to the setting temperature accompanied by the required application of pressure.
  • the temperature should be increased to 270 to 400 degrees Fahrenheit with a pressure of from 2000 to 8000 pounds per square inch; for urea formaldehyde, the temperature should be increased to 290 to 325 degrees Fahrenheit with a pressure of from 1000 to 5000 pounds per square inch; for melamine formaldehyde, the temperature should be increased to 280 to 370 degrees Fahrenheit with What is claimed is:
  • v 1 In a process of making a, wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, the band being fabricated of impact resistant material, the steps comprising forming said pin with an annular groove extending about the periphery at substantially the region of impact of a bowling ball therewith, a cutaway bottom section extending longitudinally inwardly from the periphery of said pin adjacent to and terminating in the bottom of said pin, and a bore extending from the bottom of the pin and communicating with said groove and said section, filling said groove, the space surrounding said cutaway section and bore with a molten moldable plastic material settable upon heating, and subjecting said plastic material to an elevated temperature and pressure to form a band of impact resistant material attached to said pin.
  • a wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material, the steps of forming said pin with a cutaway bottom section extending longitudinally inwardly from the periphery of said pin adjacent to and terminating in the bottom of said pin, an annular groove extending about the periphery at substantially the region of impact of a bowling ball therewith, a bore positioned along the.

Description

Sept. 18, 1951 R. E. CLARK 2,568,274
m u m Patented Sept. 18, 1951 UNITED STATES PATENT OFFICE PROCESS FOR MAKING nowmNG PINS' Ray E. Clark, Willowbrook, Calif. Application October 8, 1948, Serial No. 53,553 3 Claims. (01. 18-59) This invention relates to a process for makin bowling pins.
Bowling pinsmade entirely of wood when subjected to the impacting action of bowling balls are caused to be forcibly thrown against the hard wood of the alleys. This battering of. the pins against the alleys soon results in the pins becoming nicked and gouged, especially at and around their bottom standing surface or base, thus making it difficult and often impossible to stand such worn pins upright on the alley surface. Worn pins due to such wear become unbalanced and are, therefore, obnoxious to bowlers. In addition, the bowling pins along the region of bowling ball impact in a comparatively short time of use show a marring or breaking away of the grain. surface, necessitating the renovation of the pins, namely, turning, then sanding, and finally painting. After the bowling pins have undergone several of such renovations they become so small in circumference as to fall through the pin setting machines, thereby being no longer usable.
An object of the present invention is to provide a process for making a wooden bowling pin having a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, the band being fabricated of impact resistant material.
Another object of the present invention is to provide a process of making a wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, the base and band being fabricated of impact resistant material.
A further object of the present invention is to provide a process of making a wooden bowling pin having a base and a band spaced from the base fabricated of impact resistant material which is simple in execution and highly eflicient.
Other objects and advantages of the invention will be apparent from the following description taken in conjunction with the accompanying drawing, wherein:
Figure 1 is a side elevational view of a typical bowling pin showing the undercutting of the base and the annular groove and communicating bores prior to the subjection of the pin to a molding operation with a moldable plastic material settable upon heating.
Figure 2 is a sectional view taken on 2-4 of Figure l.
Figure 3 is a sectional view taken on the line 3-3 of Figure 1.
Figure 4 is a side elevational sectionalview 01 the line a two part mold having the bowling pin of Figure I mounted therein, with the ejection mechanism containing a charge of the moldable plastic material settable upon heating in position to effect the injection stroke.
Figure 5 is a side elevational view, partly in section, of a bowling pin having the base and band of impact resistant material formed by the process of the present invention.
In carrying out the process of the present invention, a conventional type wooden bowling pin l0, Figures 1 and 2, is cut away inwardly from the periphery of the pin adjacent its bottom II to form a cutaway bottom section l2 of the desired area-for forming the base of impact resistant material. Formed in the periphery of the pin [0 at substantially the region of impact of a bowling ball therewith is an annular groove l3, the groove preferably tapering inwardly in cross section. Positioned along the longitudinal axis of the pin I0 is a bore [4, the bore extending from the bottom of the pin to the annularly grooved region of the pin ID. The annular groove I3 is interconnected with the longitudinal bore 14 by means of radial bores 15. Passageways l6 and I1 interconnect the cutaway section 12 with the longitudinal bore 10, the passageways extending from the cutaway section 12 upwardly and inwardly into the longitudinal bore l4. Thus, the first step in the process is forming the pin I0 witha cutaway bottom section, an annular groove extending about the periphery at substantially the region of impact of a bowling ball therewith, a bore positioned along the longitudinal axis and extending from the bottom of the pin to the annularly grooved region, a plurality of radial bores extending from the longitudinal bore and communicating with said groove, and passageways extending from the cutaway'section to and into the longitudinal bore. The pin 10 having its main body formed as herein above described is then placed in a two part forming mold I8, Figure 4, so designed as to form the desired base and band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material. The mold i8 is provided with an injection mechanism 19 for forcibly in jecting a liquid into such mold, the mechanism including a cylindrical container 20 for the reception of liquid material therein, a detachable cover 2| therefor, a nozzle 22 projecting into the interior of the mold l8 and in communication with thegcontainerZB, and a piston 23 slidably movable in the container 20 and supported in the cover 2|. The liquid employed in the container 20 is a moldable plastic material settable upon heating, which material after setting and an in- 4 a pressure of from 1000 to 8000 pounds per square inch; and for casein, the temperature should be increased to 200 to 225 degrees Fahrenheit with a pressure of from 2000 to 2500 pounds per square tegral part of a bowling pin has the inherent 5 inch. Preferably, a reinforcing material such as property of being impact resistant or resistant to cotton flock, shredded canvas, should be admixed the impact of a bowling ball with the bowling pin. with each of the aforementioned resins when em- The liquid moldable plastic material settable upon ployed for this purpose. heating may be non-cured rubber which has been Other materials that may be employed as the preheated to a temperature such as to render l moldable plastic material settable upon heating it molten or liquid, for example a temperature are thermoplastics such as cellulose acetate, celluof 270 to 280 degrees Fahrenheit. With the conlose butyrate, cellulose propionate, ethyl cellutainer 20 charged with a mass of molten nonlose, polyvinyl chloride, vinyl chloride acetate, cured rubber the piston 23 is caused to-be moved polyvinyl formal, polyvinyl butyral, polystyrene, downwardly, thereby causing the molten rubber l styrene elastomer, polyethylene, polyamide. For to flow through the longitudinal bore 'Ill into and" each of the foregoing the following range of out of the radial bores into the :annular groove molding temperature and range of pressure are l3, a portion of the molten rubber flowing through required.
Thermoplastic gg gg Pressure Cellulose Acetate. 340-500 3,000 to 30,000 lbs. per sq. inch.
Cellulose Butyrate 340-420 Do.
Cellulose Propionate. 300-500 D0.
Ethyl Cellulose 350-500 Do.
Polyvinyl Chloride 300-400 10,000 to 30,000 lbs. per sq. inch.
Vinyl Chloride Acetate Polyvinyl Formal.
18,000 to 30,000 lbs. per sq. inch. 10,000 to 30,000 lbs. per sq. inch.
Polyvinyl Butyral... 250-340 15,000 to 30,000 lbs. per sq. inch. Polystyrene 375-500 10,000 to 30,000 lbs. per sq. inch. Styrene Elastomer 355-410 15,000 to 20,000 lbs. per sq. inch. olyethylene 325-375 4,500 to 20,000 lbs. per sq. inch. Polyamide 510-600 5,000 to 50,000 lbs. per sq. inch.
the passageways t6 and I! into the space surrounding the cutaway section l2. When the longitudinal bore l4, radial bores l5, annular groove [3, passageways l6 and fl, and space. surrounding the cutaway section [2 have been completely filled with the molten rubber, the piston 23 is placed under increased pressure by any suitable means and the temperature of the molten rubber increaesd to the vulcanizing or curing temperature. Under these conditions of temperature and pressure the rubber is allowed to. set for a length of time depending upon the composition of the rubber. Preferably, the temperature is raised to a temperature of 290 to 300 degrees Fahrenheit and a pressure of 500 pounds per square inch. When the rubber has set, the temperature. and pressure are reduced to normal temperature and pressure, whereupon the bowling pin I 0 is. removed from the forming mold la, The resultant product is a completely formed bowling pin, Figure 5, having a base 25 and a band 26 extending about the periphery of the pin I0. at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material.
In place of employing non-cured rubber as the moldable plastic material settable upon heating, thermo setting resins like phenol formaldehyde, phenol furfural, urea formaldehyde, melamine formaldehyde, casein, may be used. Each of such resins would first have to be heated to a temperature to convert it to a molten state, and then the temperature would have to be increased to the setting temperature accompanied by the required application of pressure. For phenol formaldehyde and phenol furfural, the temperature should be increased to 270 to 400 degrees Fahrenheit with a pressure of from 2000 to 8000 pounds per square inch; for urea formaldehyde, the temperature should be increased to 290 to 325 degrees Fahrenheit with a pressure of from 1000 to 5000 pounds per square inch; for melamine formaldehyde, the temperature should be increased to 280 to 370 degrees Fahrenheit with What is claimed is:
v 1. In a process of making a, wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, the band being fabricated of impact resistant material, the steps comprising forming said pin with an annular groove extending about the periphery at substantially the region of impact of a bowling ball therewith, a cutaway bottom section extending longitudinally inwardly from the periphery of said pin adjacent to and terminating in the bottom of said pin, and a bore extending from the bottom of the pin and communicating with said groove and said section, filling said groove, the space surrounding said cutaway section and bore with a molten moldable plastic material settable upon heating, and subjecting said plastic material to an elevated temperature and pressure to form a band of impact resistant material attached to said pin.
2. In a process of making a wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material, the steps of forming said pin with a cutaway bottom section extending longitudinally inwardly from the periphery of said pin adjacent to and terminating in the bottom of said pin, an annular groove extending about the periphery at substantially the region of impact of a bowling ball therewith, a bore positioned along the. longitudinal axis and extending from the bottom of the pin to the annularly grooved region, a plurality of radial bores extending from the longitudinal bore and communicating with said groove, and passageways extending from the cutaway section to and into the longitudinal bore, filling the groove, bores, passageways, and space'surrounding said cutaway section with a molten moldable plastic material settable upon heating, and subjecting said plastic material to an elevated temperature and pressure to form a base and band of impact resistant material attached to said pin.
3. In a process of making a wooden bowling pin having a base and a band extending about the periphery of the pin at substantially the region of impact of a bowling ball therewith, both the base and band being fabricated of impact resistant material, the steps of forming said pin with a cutaway bottom section extending longitudinally inwardly from the periphery of said pin adjacent to and terminating in the bottom of said pin, an annular groove tapering inwardly in cross section and extending about the periphery at substantially the region of impact of a bowling ball therewith, a bore positioned along the longitudinal axis and extending from the bottom of the pin to the annularly grooved region, a plurality of radial bores extending from the longitudinal bore and communicating with said groove, and passageways extending upwardly and inwardly from the cutaway section to and into the longitudinal bore, filling the groove, bores, passageways, and space surrounding said cutaway section with a molten moldable plastic material settable upon heating, and subjecting said plastic material to an elevated temperature and pressure to form a base and a band of impact resistant material attached to said pin.
RAY E. CLARK.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS
US53553A 1948-10-08 1948-10-08 Process for making bowling pins Expired - Lifetime US2568274A (en)

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Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2672173A (en) * 1953-03-30 1954-03-16 Elastic Stop Nut Corp Self-locking fastening device
US2677149A (en) * 1949-08-11 1954-05-04 Elastic Stop Nut Corp Die structure for the manufacture of self-locking fastening devices
US2684504A (en) * 1951-08-06 1954-07-27 Peter G Sell Method of repairing bowling pins
US2766080A (en) * 1954-02-10 1956-10-09 Elastic Stop Nut Corp Screw threaded pivot bearing with locking means
US2848978A (en) * 1954-11-26 1958-08-26 Faber Castell A W Eraser mounting for pencils
US2856679A (en) * 1956-07-26 1958-10-21 Jr William E Burkhardt Method of relocating the finger holes in bowling balls
US2862246A (en) * 1956-01-25 1958-12-02 Harry J Sadler Method for producing a roller
US2877709A (en) * 1956-04-23 1959-03-17 Olin Mathieson Cartridge
US2891794A (en) * 1956-12-12 1959-06-23 Parallel Products Company Archery arrow
US2911682A (en) * 1955-02-28 1959-11-10 Eastman Kodak Co Method of casting a multireflector prism in a flexible mold
US2956848A (en) * 1958-02-03 1960-10-18 Koppers Co Inc Bearing member
US3025061A (en) * 1958-03-20 1962-03-13 American Mach & Foundry Bowling pins
US3046013A (en) * 1960-05-23 1962-07-24 Louis F Kutik Pool balls
US3098655A (en) * 1959-11-20 1963-07-23 American Mach & Foundry Plastic bowling pin
US3135639A (en) * 1960-06-10 1964-06-02 Eric P Schellin Method of making or repairing a bowling pin
US3141672A (en) * 1955-03-01 1964-07-21 Larry Unterbrink Bowling pin
US3147975A (en) * 1960-05-23 1964-09-08 American Mach & Foundry Bowling pin
US3169766A (en) * 1959-09-18 1965-02-16 American Mach & Foundry Bowling pin
US3211813A (en) * 1961-12-14 1965-10-12 Herman C Behrendt Method and device for repairing bowling pins
US3224770A (en) * 1963-02-14 1965-12-21 Harry A C Brinkmann Tenpin
US3228686A (en) * 1961-08-04 1966-01-11 Albany Billiard Ball Company Molded plastic game ball
US3231274A (en) * 1962-11-23 1966-01-25 Hans H Wanders Multi-part plastic bowling pin
US3232617A (en) * 1962-10-15 1966-02-01 Brunswick Corp Pin core structure for decreased checking
US3293693A (en) * 1963-04-12 1966-12-27 Standard Pressed Steel Co Apparatus for forming plastic locking inserts in nuts
US3377066A (en) * 1965-01-11 1968-04-09 Jeffrey J. Trowbridge Ball-striking implement and method for making same
US3407838A (en) * 1966-01-12 1968-10-29 Grinnell Corp Plastic lined valve
US3520969A (en) * 1966-08-01 1970-07-21 American Mach & Foundry Method of making a bowling pin
US3626050A (en) * 1968-10-09 1971-12-07 Brunswick Corp Method of making bowling pins
US3861646A (en) * 1972-10-27 1975-01-21 Dresser Ind Dual sealing element valve for oil well pumps
US5075066A (en) * 1988-12-16 1991-12-24 Yoshida Kogyo K.K. Method of making ornaments
US6312636B1 (en) 1998-06-26 2001-11-06 Siemens Automotive Corporation Method for electromagnetic actuator with molded connector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1770388A (en) * 1927-02-07 1930-07-15 Brunswick Balke Collender Co Bowling pin
US2086939A (en) * 1936-02-19 1937-07-13 Henry K Hess Method of repairing impaired bowling pins and article resulting therefrom
US2120553A (en) * 1933-10-31 1938-06-14 Olympia Buromaschinenwerke Ag Key cap
US2180676A (en) * 1939-06-21 1939-11-21 Isadore E Guimond Bowling pin
US2289872A (en) * 1940-05-17 1942-07-14 Harry A C Brinkmann Method of forming tenpins

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1770388A (en) * 1927-02-07 1930-07-15 Brunswick Balke Collender Co Bowling pin
US2120553A (en) * 1933-10-31 1938-06-14 Olympia Buromaschinenwerke Ag Key cap
US2086939A (en) * 1936-02-19 1937-07-13 Henry K Hess Method of repairing impaired bowling pins and article resulting therefrom
US2180676A (en) * 1939-06-21 1939-11-21 Isadore E Guimond Bowling pin
US2289872A (en) * 1940-05-17 1942-07-14 Harry A C Brinkmann Method of forming tenpins

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677149A (en) * 1949-08-11 1954-05-04 Elastic Stop Nut Corp Die structure for the manufacture of self-locking fastening devices
US2684504A (en) * 1951-08-06 1954-07-27 Peter G Sell Method of repairing bowling pins
US2672173A (en) * 1953-03-30 1954-03-16 Elastic Stop Nut Corp Self-locking fastening device
US2766080A (en) * 1954-02-10 1956-10-09 Elastic Stop Nut Corp Screw threaded pivot bearing with locking means
US2848978A (en) * 1954-11-26 1958-08-26 Faber Castell A W Eraser mounting for pencils
US2911682A (en) * 1955-02-28 1959-11-10 Eastman Kodak Co Method of casting a multireflector prism in a flexible mold
US3141672A (en) * 1955-03-01 1964-07-21 Larry Unterbrink Bowling pin
US2862246A (en) * 1956-01-25 1958-12-02 Harry J Sadler Method for producing a roller
US2877709A (en) * 1956-04-23 1959-03-17 Olin Mathieson Cartridge
US2856679A (en) * 1956-07-26 1958-10-21 Jr William E Burkhardt Method of relocating the finger holes in bowling balls
US2891794A (en) * 1956-12-12 1959-06-23 Parallel Products Company Archery arrow
US2956848A (en) * 1958-02-03 1960-10-18 Koppers Co Inc Bearing member
US3025061A (en) * 1958-03-20 1962-03-13 American Mach & Foundry Bowling pins
US3169766A (en) * 1959-09-18 1965-02-16 American Mach & Foundry Bowling pin
US3098655A (en) * 1959-11-20 1963-07-23 American Mach & Foundry Plastic bowling pin
US3147975A (en) * 1960-05-23 1964-09-08 American Mach & Foundry Bowling pin
US3046013A (en) * 1960-05-23 1962-07-24 Louis F Kutik Pool balls
US3135639A (en) * 1960-06-10 1964-06-02 Eric P Schellin Method of making or repairing a bowling pin
US3228686A (en) * 1961-08-04 1966-01-11 Albany Billiard Ball Company Molded plastic game ball
US3211813A (en) * 1961-12-14 1965-10-12 Herman C Behrendt Method and device for repairing bowling pins
US3232617A (en) * 1962-10-15 1966-02-01 Brunswick Corp Pin core structure for decreased checking
US3231274A (en) * 1962-11-23 1966-01-25 Hans H Wanders Multi-part plastic bowling pin
US3224770A (en) * 1963-02-14 1965-12-21 Harry A C Brinkmann Tenpin
US3293693A (en) * 1963-04-12 1966-12-27 Standard Pressed Steel Co Apparatus for forming plastic locking inserts in nuts
US3377066A (en) * 1965-01-11 1968-04-09 Jeffrey J. Trowbridge Ball-striking implement and method for making same
US3407838A (en) * 1966-01-12 1968-10-29 Grinnell Corp Plastic lined valve
US3520969A (en) * 1966-08-01 1970-07-21 American Mach & Foundry Method of making a bowling pin
US3626050A (en) * 1968-10-09 1971-12-07 Brunswick Corp Method of making bowling pins
US3861646A (en) * 1972-10-27 1975-01-21 Dresser Ind Dual sealing element valve for oil well pumps
US5075066A (en) * 1988-12-16 1991-12-24 Yoshida Kogyo K.K. Method of making ornaments
US6312636B1 (en) 1998-06-26 2001-11-06 Siemens Automotive Corporation Method for electromagnetic actuator with molded connector
US6501358B2 (en) 1998-06-26 2002-12-31 Siemens Automotive Corporation Electromagnetic actuator with molded connector

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