US5236174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operable valve
Assignee: Robert Bosch GmbH
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Filing: 1991-01-19
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Granted: 1993-08-17
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Expires: 2011-01-19
Abstract
Abstract An electromagnetically operable valve having a core on which a magnet coil is arranged, an armature which acts on a valve closing body by means of a connecting pipe, in which the components to be welded together include a reduced diameter portion in which welding of the parts is by a laser in the reduced diameter portions.
Inventors
- 👤 Dieter Vogt
- 👤 Ferdinand Reiter
- 👤 Rudolf Babitzka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0614; F02M51/0625; F02M51/0664; F02M51/0671; F02M51/0682
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
286 words
An electromagnetically operable valve for fuel injection systems of internal-combustion engines, having a core (1) surrounded by a magnet coil (3), an armature (12) welded to a connecting pipe (23), a valve closing body (14) which interacts with a fixed valve seat (9) is welded to said connecting pipe, a core end facing said armature, a pipe-shaped metallic intermediate part (6) which is connected by means of an upper end to said end (2) of said core facing the armature and by means of a lower end is connected to a pipe-shaped connecting part (23) in a sealed manner by welding, at least one clip-shaped guide element (29), which engages over the magnet coil and is connected by means of a lower end facing the valve closing body to the connecting part (20), and is connected by means of an upper end to the core (1) by welding, a metallic valve seating body (8), which has a fixed valve seat (9), and is mounted on the connecting part (20) on an end facing away from the intermediate part by welding, said lower end of said armature (12) includes a reduced diameter portion in cross section which is welded to said connecting pipe (23), said upper and lower ends of said intermediate part include a reduced diameter portion which is welded to said lower end (2) of said core (1) and said connecting part (20), respectively, said upper and lower ends of said clip-shaped guide element (29) includes a reduced diameter portion which is welded to said core (1) and said connecting part (20), respectively, and said lower end of said connecting part (20) includes a reduced diameter portion which is welded to said valve seating body.
Claim 2
Dependent Claim
286 words
An electromagnetically operable valve for fuel injection systems of internal-combustion engines, having a core (1) surrounded by a magnet coil (3), an armature (12) welded to a connecting pipe (23), a valve closing body (14) which interacts with a fixed valve seat (9) is welded to said connecting pipe, a core end facing said armature, a pipe-shaped metallic intermediate part (6) which is connected by means of an upper end to said end (2) of said core facing the armature and by means of a lower end is connected to a pipe-shaped connecting part (23) in a sealed manner by welding, at least one clip-shaped guide element (29), which engages over the magnet coil and is connected by means of a lower end facing the valve closing body to the connecting part (20), and is connected by means of an upper end to the core (1) by welding, a metallic valve seating body (8), which has a fixed valve seat (9), and is mounted on the connecting part (20) on an end facing away from the intermediate part by welding, said lower end of said armature (12) includes a reduced diameter portion in cross section which is welded to said connecting pipe (23), said upper and lower ends of said intermediate part include a reduced diameter portion which is welded to said lower end (2) of said core (1) and said connecting part (20), respectively, said upper and lower ends of said clip-shaped guide element (29) includes a reduced diameter portion which is welded to said core (1) and said connecting part (20), respectively, and said lower end of said connecting part (20) includes a reduced diameter portion which is welded to said valve seating body.
Claim 3
Dependent Claim
21 words
A valve according to claim 1 in which said intermediate part includes a reinforcing collar (41) juxtaposed said reduced diameter portion.
Claim 4
Dependent Claim
26 words
A valve as set forth in claim 2, in which said reinforcing collar includes an insertion stage (42) with a chamfer towards a central opening (55).
Claim 5
Dependent Claim
40 words
A valve according to claim 1, in which the valve seating body (8) has a circumferential groove (31) between the valve seat (9) and a welded seam (30) which connects the valve seating body (8) to the connecting part (20).
Claim 6
Dependent Claim
40 words
A valve according to claim 2, in which the valve seating body (8) has a circumferential groove (31) between the valve seat (9) and a welded seam (30) which connects the valve seating body (8) to the connecting part (20).
Claim 7
Dependent Claim
40 words
A valve according to claim 3, in which the valve seating body (8) has a circumferential groove (31) between the valve seat (9) and a welded seam (30) which connects the valve seating body (8) to the connecting part (20).
Claim 8
Dependent Claim
81 words
A valve according to claim 4, in which the cross-sectional area of the valve seating body (8) between a treatment hole (32) in the valve seating body (8) and a groove base (33) of the circumferential groove (31) is less than one quarter of the cross-sectional area of the valve seating body (8) which is formed between the contact line of the valve closing body (14) resting against the valve seating surface and the circumference of the valve seating body (8).
Claim 9
Dependent Claim
81 words
A valve according to claim 5, in which the cross-sectional area of the valve seating body (8) between a treatment hole (32) in the valve seating body (8) and a groove base (33) of the circumferential groove (31) is less than one quarter of the cross-sectional area of the valve seating body (8) which is formed between the contact line of the valve closing body (14) resting against the valve seating surface and the circumference of the valve seating body (8).
Claim 10
Dependent Claim
81 words
A valve according to claim 6, in which the cross-sectional area of the valve seating body (8) between a treatment hole (32) in the valve seating body (8) and a groove base (33) of the circumferential groove (31) is less than one quarter of the cross-sectional area of the valve seating body (8) which is formed between the contact line of the valve closing body (14) resting against the valve seating surface and the circumference of the valve seating body (8).
Claim 11
Dependent Claim
22 words
A valve according to claim 1, in which the wall thickness of the reduced diameter portions in cross-section is approximately 0.3 mm.
Claim 12
Dependent Claim
22 words
A valve according to claim 2, in which the wall thickness of the reduced diameter portions in cross-section is approximately 0.3 mm.
Claim 13
Dependent Claim
22 words
A valve according to claim 3 in which the wall thickness of the reduced diameter portions in cross-section is approximately 0.3 mm.
Claim 14
Dependent Claim
22 words
A valve according to claim 4, in which the wall thickness of the reduced diameter portions in cross-section is approximately 0.3 mm.
Claim 15
Dependent Claim
22 words
A valve according to claim 7, in which the wall thickness of the reduced diameter portions in cross-section is approximately 0.3 mm.
Claim 16
Dependent Claim
39 words
A valve according to claim 10, in which the wall thickness of the reduced diameter portions in cross-section of the one part to be welded is significantly less than the wall thickness of the part without a reduced diameter.
Claim 17
Dependent Claim
31 words
A valve according to claim 1, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
Claim 18
Dependent Claim
31 words
A valve according to claim 2, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
Claim 19
Dependent Claim
31 words
A valve according to claim 3, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
Claim 20
Dependent Claim
31 words
A valve according to claim 4, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
Claim 21
Dependent Claim
31 words
A valve according to claim 7, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
Claim 22
Dependent Claim
31 words
A valve according to claim 10, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
Claim 23
Dependent Claim
31 words
A valve according to claim 15, in which said valve includes a hollow identification element (27), which is manufactured from plastic and which engages around the valve and is held thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |