Patent EP0198617B1 successfully refreshed from Google Patents.
EP0198617B1
Expired / Lapsed
EP
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Non-linear electromagnetic vibration fluid compression device
Assignee: Shanghai New Mechanical Technology Development Centre
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Filing: 1986-03-26
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Granted: 1989-11-23
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Expires: 2006-03-26
Abstract
No abstract record available.
Inventors
- 👤 Pei Sheng Cao
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 02:03
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02; F; F04; F04B; F04B17/00; F04B17/03; F04B17/04; F04B17/042
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
191 words
An electromagnetic, vibration, fluid compression device (20) comprising a first part (1, 5, 15) defining a core of an electromagnet, a second part (6, 8, 10) defining an armature for said electromagnet, an electromagnetic coil (9), means (Figure 7) for supplying electric current pulses to said coil (9) to induce relative vibration of said parts, spring means (13) for providing a restoring force between said parts, a piston (21) operably connected to one of said first and second parts, and a cylinder (23) operatively connected to the other of said first and second parts, said piston (21) being received in said cylinder and reciprocating therein in response to vibration of said first and second parts, characterised in that said spring means (13) is operable to produce a non-linear restoring force and comprises at least one set (13) of substantially rectangular leaf springs each having connection means at opposite edges thereof whereby they are rigidly fixed to one of said parts, and intermediate connection means whereby they are rigidly fixed to the other of said parts the areas of each said spring between said connection means defining in cross-section a waveform shape.
Claim 2
Dependent Claim
191 words
An electromagnetic, vibration, fluid compression device (20) comprising a first part (1, 5, 15) defining a core of an electromagnet, a second part (6, 8, 10) defining an armature for said electromagnet, an electromagnetic coil (9), means (Figure 7) for supplying electric current pulses to said coil (9) to induce relative vibration of said parts, spring means (13) for providing a restoring force between said parts, a piston (21) operably connected to one of said first and second parts, and a cylinder (23) operatively connected to the other of said first and second parts, said piston (21) being received in said cylinder and reciprocating therein in response to vibration of said first and second parts, characterised in that said spring means (13) is operable to produce a non-linear restoring force and comprises at least one set (13) of substantially rectangular leaf springs each having connection means at opposite edges thereof whereby they are rigidly fixed to one of said parts, and intermediate connection means whereby they are rigidly fixed to the other of said parts the areas of each said spring between said connection means defining in cross-section a waveform shape.
Claim 3
Dependent Claim
27 words
A device as claimed in claim 1, wherein the piston (21) is connected to said second part and the cylinder (23) is connected to said first part.
Claim 4
Dependent Claim
48 words
A device as claimed in claim 1 or 2, wherein said cylinder (23) is mounted with a central axis offset from and parallel with a major axis of said first and second parts, and link means (19) is provided for connecting said piston (21) to its associated part.
Claim 5
Independent Claim
30 words
A device according to any one of the preceding claims, wherein two cylinders (23) and associated pistons (21) each as claimed in any one of the preceding claims are provided.
Claim 6
Dependent Claim
22 words
A device as claimed in claim 4, wherein the cylinders (23) are arranged on opposite sides of said first and second parts.
Claim 7
Dependent Claim
89 words
A device as claimed in claim 4 or 5 when dependent on claim 3, wherein each said link means (19) comprises a support block (8) to which an end (6) of said electromagnetic armature is connected, and a link member (19) fixedly connecting a piston (21) to said support block (8), and each of said link members includes a rod (19) having a major axis disposed substantially perpendicular to a major axis of vibration of said first and second parts and to the axis of the associated cylinder (23).
Claim 8
Dependent Claim
32 words
A device (Figure 6) as claimed in claim 1 or 2, wherein the cylinder (23) is coaxially mounted with respect to a major axis of vibration of said first and second parts.
Claim 9
Independent Claim
54 words
A device as claimed in any one of the preceding claims, wherein said first part comprises a generally U-shaped electromagnet core (1) mounted about said coil (9), and a generally U-shaped frame (5) surrounding and receiving said generally U-shaped electromagnet core (1) and being releasably connected to the lateral surfaces of said core (1).
Claim 10
Dependent Claim
36 words
A device as claimed in claim 8, wherein the or each cylinder (23) is securely connected to said U-shaped frame (5), and the or each piston (23) is operably connected to said electromagnet armature (6, 8,10).
Claim 11
Independent Claim
106 words
A device as claimed in any one of the preceding claims, wherein said armature (6) has a generally T-shaped configuration with a leg element extending into said generally U-shaped core (1) to a position wherein the end of the leg element is adjacent to but spaced from a base portion of said generally U-shaped core (1), the gap between the free end of the leg element of the armature (6) and the base portion of the U-shaped electromagnet core (1) being equal to a gap that exists between arm portions of the T-shaped armature (6) and end most leg portions of the U-shaped electromagnet core (1).
Claim 12
Dependent Claim
49 words
A device as claimed in claim 10, wherein said second part further comprises a second linking block (10) connected to said armature (6) and extending adjacent but spaced from the exterior of said electromagnet core (1), and means (7) for operably connecting said armature (6) to said block (10).
Claim 13
Independent Claim
39 words
A device as claimed in any one of the preceding claims, wherein said set (13) of springs comprises a plurality of generally rectangular, non-linear bellows, plate springs which are stacked together but spaced apart into a mutually parallel array.
Claim 14
Independent Claim
25 words
A device as claimed in any one of the preceding claims, wherein there are two sets (13) of springs connecting said first and second parts.
Claim 15
Independent Claim
38 words
A device as claimed in any one of the preceding claims, wherein the number of plate springs in the or each set (13) equals the square of an integer (n) times a predetermined number to achieve harmonic resonance.
Claim 16
Independent Claim
38 words
A device as claimed in any of claims 1 to 13, wherein the number of plate springs in each said set (13) equals a square of an inverse integer (1/n) times a predetermined number to achieve harmonic resonance.
Claim 17
Independent Claim
33 words
A device as claimed in any one of the preceding claims, further comprising lubricating fluid pump means (Figure 5) connected between said first and second parts for delivering lubricating fluid to said device.
References Cited (Backward Citations)
No citation records indexed.
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