§
Luxuse
Patent Intelligence
Sign In
Patent US3748790A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3748790A Expired / Lapsed US ⏱️ 0.0 years remaining

Lapping machine and vibratory drive system therefor

Assignee: Individual
•
Filing: 1971-08-16
•
Granted: 1973-07-31
•
Expires: 1991-08-16
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Disclosed is a unitary spring assembly for a lapping machine whereby a lapping plate may be reciprocally vibrated at mechanical resonance at varying loads. Drive or vibration is provided by peripherally mounted electromagnetic solenoids whose force is applied tangential to the direction of rotation (or in the direction of displacement of the lapping plate). This invention relates to the art of lapping and polishing articles by abrasion so as to provide such articles with one or more surfaces having a high finish, free of blemishes such as scratches or the like as might result from cutting or sawing. More particularly, the invention relates to a mechanically resonant vibratory drive system capable of producing a continuous lapping and polishing action or motion between a surface of an article and an abrasive or polishing member.

Inventors

  • 👤 F Pizzarello
  • 👤 D Medellin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 23:06
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/10; B24B37/102; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/34; B23Q1/36; B24B31/00; B24B37/042

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 53 words
In a lapping machine having a base member and a lapping member adapted to be moved reciprocally with angularly different components of displacement, at least one of which is radial, the improvement comprising: means for applying a displacement force to said lapping member tangential to the direction of said radial component of displacement.
Claim 2
Dependent Claim 53 words
In a lapping machine having a base member and a lapping member adapted to be moved reciprocally with angularly different components of displacement, at least one of which is radial, the improvement comprising: means for applying a displacement force to said lapping member tangential to the direction of said radial component of displacement.
Claim 3
Dependent Claim 36 words
The invention according to claim 1 wherein said means includes motor means mounted on peripheral portions of said base member and a unitary spring assembly disposed between and coupling said lapping member and said base member.
Claim 4
Dependent Claim 50 words
A lapping machine comprising: a. a base member, b. a lapping member, c. motor means mounted on peripheral portions of said base member for applying a rotational displacement force to said lapping member, d. and a unitary spring assembly disposed between and coupling said lapping member and said base member.
Claim 5
Dependent Claim 50 words
A lapping machine comprising: a. a base member, b. a lapping member, c. motor means mounted on peripheral portions of said base member for applying a rotational displacement force to said lapping member, d. and a unitary spring assembly disposed between and coupling said lapping member and said base member.
Claim 6
Dependent Claim 34 words
The invention according to claim 3 wherein said unitary spring assembly comprises a plurality of spring rods affixed between first and second support members coupled, respectively, to said base member and said lapping member.
Claim 7
Dependent Claim 28 words
The invention according to claim 4 wherein said spring rods are inclined in the same direction and to the same extent between said first and second support members.
Claim 8
Dependent Claim 26 words
The invention according to claim 3 wherein said motor means includes a pair of electromagnetic solenoids mounted on diametrically opposite peripheral portions of said base member.

References Cited (Backward Citations)

US3088247A Cited
US3643384A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-30 1977-01-29 1977-07-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-30 1981-01-29 1981-07-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-30 1985-01-29 1985-07-31 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag