Patent US3930174A successfully refreshed from Google Patents.
US3930174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator and armature for a vibrating motor
Assignee: Dresser Industries Inc
•
Filing: 1974-04-08
•
Granted: 1975-12-30
•
Expires: 1994-04-08
Abstract
Abstract A vibrating motor having a main frame and a center clamp with vibrator bars interposed between the main frame and the center clamp. The main frame and the center clamp vibrate relatively to each other, with the main frame being the relatively heavier element so that the principal vibration is that of the center clamp and the working element that is secured to the center clamp. There is a stator in the main frame and an armature in the center clamp disposed opposite each other with a small air gap. The stator is periodically excited to attract and to release the armature which results in the vibration of the center clamp and the working element. The stator is encapsulated in a housing that is mounted in the main frame, and the armature is encapsulated in a housing that is formed in the center clamp. Each of the stator housing and the armature housing is formed with an opening through which the encapsulating material is poured into the housing around the stator and the armature, respectively, and hardens to securely hold the stator and the armature in the respective housing.
Inventors
- 👤 Ming K Shieh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
194 words
A vibrating motor comprising: a stator housing having an open end lying generally in a plane; a stator disposed in the stator housing and having an end flush with the open end of said stator housing; means for providing periodic electrical excitation of the stator; an armature housing movably connected to the stator housing and having an open end lying generally in a plane parallel to and spAced from the open end of said stator housing; and an armature disposed in the armature housing and having an end flush with the open end of said armature housing opposite the end of the stator such that periodic excitation of the stator produces a reciprocating movement of the armature and armature housing due to the periodic magnetic attraction and release of said armature, wherein both the stator and the armature are held in their respective housings by a hardened encapsulating material filling their respective housing flush to the open ends and surrounding all of the stator and armature except for their opposed polar ends and further including pieces of expanded metal secured to the walls of said housings to form an anchor for the encapsulating material.
Claim 2
Dependent Claim
194 words
A vibrating motor comprising: a stator housing having an open end lying generally in a plane; a stator disposed in the stator housing and having an end flush with the open end of said stator housing; means for providing periodic electrical excitation of the stator; an armature housing movably connected to the stator housing and having an open end lying generally in a plane parallel to and spAced from the open end of said stator housing; and an armature disposed in the armature housing and having an end flush with the open end of said armature housing opposite the end of the stator such that periodic excitation of the stator produces a reciprocating movement of the armature and armature housing due to the periodic magnetic attraction and release of said armature, wherein both the stator and the armature are held in their respective housings by a hardened encapsulating material filling their respective housing flush to the open ends and surrounding all of the stator and armature except for their opposed polar ends and further including pieces of expanded metal secured to the walls of said housings to form an anchor for the encapsulating material.
Claim 3
Dependent Claim
181 words
A vibrating motor comprising: a stator housing having an open end lying generally in a plane; a stator disposed in the stator housing and having two pole faces flush with and exposed in the open end of said stator housing; means for providing periodic electrical excitation of the stator; an armature housing movably connected to the stator housing and having an open end lying generally in a plane parallel to and spaced from the open end of said stator housing; and an armature disposed in the armature housing and having two pole faces flush with and exposed in the open end of said armature housing opposite the pole faces of the stator such that periodic excitation of the stator produces a reciprocating movement of the armature and armature housing due to the periodic magnetic attraction and release of said armature, wherein both the stator and the armature are held in their respective housings by a hardened encapsulating material filling their respective housings flush to the open ends and surrounding all of the stator and armature except for their opposed polar ends.
Claim 4
Dependent Claim
181 words
A vibrating motor comprising: a stator housing having an open end lying generally in a plane; a stator disposed in the stator housing and having two pole faces flush with and exposed in the open end of said stator housing; means for providing periodic electrical excitation of the stator; an armature housing movably connected to the stator housing and having an open end lying generally in a plane parallel to and spaced from the open end of said stator housing; and an armature disposed in the armature housing and having two pole faces flush with and exposed in the open end of said armature housing opposite the pole faces of the stator such that periodic excitation of the stator produces a reciprocating movement of the armature and armature housing due to the periodic magnetic attraction and release of said armature, wherein both the stator and the armature are held in their respective housings by a hardened encapsulating material filling their respective housings flush to the open ends and surrounding all of the stator and armature except for their opposed polar ends.
References Cited (Backward Citations)
US2458545A
Cited
US3167670A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |