Metal working – Method of mechanical manufacture – Electrical device making
Patent
1995-07-03
1998-05-19
Hall, Carl E.
Metal working
Method of mechanical manufacture
Electrical device making
335253, 25112915, H01F 4102
Patent
active
057523088
ABSTRACT:
A solenoid actuator, adapted for use in a fuel injector, has a pole member, an armature associated therewith, and an energizable winding associated with the pole member. The solenoid actuator is latchable by residual magnetism between the pole member and the armature without the aid of a permanent magnet. The pole member and the armature are composed of steel having a carbon content of between 0.8% and 1.2% and an RC hardness of between 40 and 60. The armature is reciprocable between a first position in which the armature makes physical contact with the pole member and a second position in which the armature is spaced from the pole member. The armature occupies the first position when the winding is energized and the second position when the winding is deenergized. The armature is held in the first position by residual magnetism between the pole member and the armature when the winding is deenergized after being initially energized. The actuator may also be embodied in the form of a dual-acting actuator having an armature and first and second pole members. The armature and pole member(s) of the actuator may be formed via a heat treating method which is based on the recognition of the relationship between the hardness of the pole member(s) and armature and the resultant residual magnetism of those components.
REFERENCES:
patent: 2144862 (1939-01-01), Truxell, Jr.
patent: 2421329 (1947-05-01), Hoffer
patent: 2434586 (1948-01-01), Reynolds
patent: 2512557 (1950-06-01), Weldy
patent: 2535937 (1950-12-01), Bozec et al.
patent: 2552445 (1951-05-01), Nielsen
patent: 2597952 (1952-05-01), Rosenlund
patent: 2621011 (1952-12-01), Smith
patent: 2672827 (1954-03-01), McGowen, Jr.
patent: 2727498 (1955-12-01), Reiners
patent: 2749181 (1956-06-01), Maxwell et al.
patent: 2916048 (1959-12-01), Gunkel
patent: 3035780 (1962-05-01), Peras
patent: 3057560 (1962-10-01), Campbell
patent: 3071714 (1963-01-01), Hadekel
patent: 3175771 (1965-03-01), Breting
patent: 3410519 (1968-11-01), Evans
patent: 3532121 (1970-10-01), Sturman et al.
patent: 3570806 (1971-03-01), Sturman et al.
patent: 3570807 (1971-03-01), Sturman et al.
patent: 3570833 (1971-03-01), Sturman et al.
patent: 3573690 (1971-04-01), Kettering et al.
patent: 3585547 (1971-06-01), Sturman
patent: 3604959 (1971-09-01), Sturman et al.
patent: 3675853 (1972-07-01), Lapera
patent: 3683239 (1972-08-01), Sturman
patent: 3743898 (1973-07-01), Sturman
patent: 3753547 (1973-08-01), Topham
patent: 3814376 (1974-06-01), Reinicke
patent: 3821967 (1974-07-01), Sturman et al.
patent: 3835829 (1974-09-01), Links
patent: 3858135 (1974-12-01), Gray
patent: 3989066 (1976-11-01), Sturman et al.
patent: 4087736 (1978-05-01), Mori et al.
patent: 4087773 (1978-05-01), Jencks et al.
patent: 4107546 (1978-08-01), Sturman et al.
patent: 4108419 (1978-08-01), Sturman et al.
patent: 4114647 (1978-09-01), Sturman et al.
patent: 4114648 (1978-09-01), Nakajima et al.
patent: 4120456 (1978-10-01), Kimura et al.
patent: 4152676 (1979-05-01), Morgenthaler et al.
patent: 4189816 (1980-02-01), Chalansonnet
patent: 4192466 (1980-03-01), Tanasawa et al.
patent: 4231525 (1980-11-01), Palma
patent: 4248270 (1981-02-01), Ostrowski
patent: 4266727 (1981-05-01), Happel et al.
patent: 4273291 (1981-06-01), Muller
patent: 4275693 (1981-06-01), Leckie
patent: 4308891 (1982-01-01), Loup
patent: 4354662 (1982-10-01), Thompson
patent: 4375274 (1983-03-01), Thoma et al.
patent: 4392612 (1983-07-01), Deckard et al.
patent: 4396037 (1983-08-01), Wilcox
patent: 4409638 (1983-10-01), Sturman et al.
patent: 4482094 (1984-11-01), Knape
patent: 4501290 (1985-02-01), Sturman et al.
patent: 4516600 (1985-05-01), Sturman et al.
patent: 4518147 (1985-05-01), Andresen et al.
patent: 4526519 (1985-07-01), Mowbray et al.
patent: 4541454 (1985-09-01), Sturman et al.
patent: 4558844 (1985-12-01), Donahue, Jr.
patent: 4610428 (1986-09-01), Fox
patent: 4648559 (1987-03-01), Fuller
patent: 4653455 (1987-03-01), Eblen et al.
patent: 4658824 (1987-04-01), Scheibe
patent: 4702212 (1987-10-01), Best et al.
patent: 4721253 (1988-01-01), Noguchi et al.
patent: 4753416 (1988-06-01), Inagaki et al.
patent: 4794890 (1989-01-01), Richeson, Jr.
patent: 4811221 (1989-03-01), Sturman et al.
patent: 4812884 (1989-03-01), Mohler
patent: 4813599 (1989-03-01), Greiner et al.
patent: 4831989 (1989-05-01), Haines
patent: 4846440 (1989-07-01), Carlson et al.
patent: 4875499 (1989-10-01), Fox
patent: 4893102 (1990-01-01), Bauer
patent: 4893652 (1990-01-01), Nogle et al.
patent: 4928887 (1990-05-01), Miettaux
patent: 4964571 (1990-10-01), Taue et al.
patent: 4993637 (1991-02-01), Kanesaka
patent: 5004577 (1991-04-01), Ward
patent: 5042445 (1991-08-01), Peters et al.
patent: 5049971 (1991-09-01), Krumm
patent: 5050543 (1991-09-01), Kawamura
patent: 5110087 (1992-05-01), Studtmann et al.
patent: 5121730 (1992-06-01), Ausman et al.
patent: 5131624 (1992-07-01), Kreuter et al.
patent: 5156341 (1992-10-01), Terakado et al.
patent: 5161779 (1992-11-01), Graner et al.
patent: 5188336 (1993-02-01), Graner et al.
patent: 5339777 (1994-08-01), Cannon
Frankl, et al., "Electronic Unit Injectors-Revised," SAE Technical Paper Series, 40th Annual Earthmoving Industry Conference, Peoria, Illinois, (Apr. 11-13, 1989).
Roters, "Electromagnetic Devices," First Edition, pp. 44-45, 67, 70.
Sturman, "Breakthrough in Digital Valves," Machine Design, vol. 66, No. 4, dated Feb. 21, 1994, pp. 37-42.
Supplemental Information Disclosure Statement dated Nov. 3, 1994 filed in U.S. Serial No. 08/247,150, 2 pages, including excerpts from Sep. 6, 1992 memorandum by Dale Maley.
Maley Dale C.
Tharp Dwayne E.
Caterpillar Inc.
Hall Carl E.
LandOfFree
Method of forming a hard magnetic valve actuator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of forming a hard magnetic valve actuator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of forming a hard magnetic valve actuator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1843864