← Back to Patent Explorer
CH557218A Expired / Lapsed CH ⏱️ 0.0 years remaining

Lawnmower blade sharpening machine - blade holder reciprocates to carry blade past grinding wheel

Assignee: Burkett Shivey E
•
Filing: 1973-04-18
•
Granted: —
•
Expires: 1993-04-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A baseplate (10) carries a motor (11) rotating a grinding wheel (12) past the edge of which the flat strip blade (30) is fed. The feed mechanism includes a second motor (21) rotating at 20 r.p.m., driving an eccentric disc (26) and operating a crank arm (23) to reciprocate a slider (35) to which the blade is clamped. A spring (32) holds the blade against the grinding wheel. The stroke of the slider can be adjusted.

Inventors

No inventors recorded.

Bibliographic Details

Application Number —
Jurisdiction CH
Data Source google_patents
Last Synchronized 2026-10-31 18:47
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/38

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag