LAMINATED GEAR CONSTRUCTION

• US 3,719,103 A
• Filed: 10/07/1971
• Issued: 03/06/1973
• Est. Priority Date: 10/07/1971
• Status: Expired due to Term

• Current Assignee: George W. Streander
• Original Assignee: George W. Streander
• Inventors: Streander, George W.
• Primary Examiner(s): Gerin, Leonard H.
• Application Number:
  US05/187,438
• Time in Patent Office: 516 Days
• Field of Search: 74/445,447,440,439,434
• US Class Current: 74/445
• CPC Class Codes: F16H 2055/185 using compound gears with coincident teeth of different material, e.g. laminated construction of metal and elastomeric gear layers, where elastic layer is slightly oversized
• CPC Class Codes: F16H 55/18 Special devices for taking up backlash for gears having orbital motion F16H1/2863
• CPC Class Codes: Y10T 74/19898 Backlash take-up
• CPC Class Codes: Y10T 74/19916 Multiple disks
• CPC Class Codes: Y10T 74/19926 Detachable

Abstract

A gear body including an edge portion of predetermined configuration and of laminated construction including a center ply of plastic material and a pair of opposite side plies constructed of more rigid material. The aforementioned edge portion of the gear body has gear teeth formed therein with each of the gear teeth composed of aligned gear teeth segments formed in the three plies of the edge portion and with the gear tooth segments formed in the center plastic ply of the gear body including tooth segments defining surfaces projecting at least slightly outwardly beyond the corresponding tooth segment defining surfaces comprising the gear teeth formed in the opposite side plies of the gear body.

Claims

1. A gear body comprising a center panel of plastic material and a pair of opposite side plates constructed of more rigid material, said plates being secured together with said panel clamped therebetween to form a laminated panel. Said laminated panel including an edge portion having gear teeth formed therein each consisting of a pair of gear tooth segments formed in said plates and a gear tooth segment formed in said panel, the edges of said gear teeth segments formed in said panel projecting slightly outwardly of the corresponding edges of the gear teeth segments formed in said plates.

2. A gear body including an edge portion having gear teeth formed therein, at least said edge portion being of laminated construction including a center ply of plastic material and a pair of opposite side plies constructed of more rigid material, the teeth formed in said edge portion being defined by aligned tooth segments formed in said plies, the edges of said center ply defining the tooth segments thereof projecting at least slightly outwardly of the corresponding edges defining the tooth segments of the opposite side plies.

3. The combination of claim 1 wherein said plates include circumferentially spaced aligned apertures formed therethrough, and a plurality of tension fasteners secured through said apertures biasing said plates together so as to clampingly engage said panel therebetween.

4. The combination of claim 1 wherein said center panel is of a greater thickness than said plates.

5. The combination of claim 2 wherein said edge portion has an outwardly opening central groove formed therein, said center ply being seated in said groove.

6. The combination of claim 5 wherein the confronting surfaces of said gear body defining opposite sides of said groove have recesses formed therein opening into said groove, said center ply including integral portions thereof keyed in said recesses.