Composite gear and method of making same

Details Composite gear and method of making same Composite gear and method of making same

1997-10-01

1998-12-29

Marmor, Charles A.

Machine element or mechanism

Gearing

Rotary bodies

74445, 74461, 74DIG10, 264273, 2989337, F16H 5514

Patent

active

058529519

ABSTRACT:
A composite gear includes one or more metal stamped plates, and two thermoplastic layers disposed on opposite sides of the plates. Apertures are provided in the stamped metal plates so that the molten thermoplastic material may flow through the apertures and anchor the two thermoplastic layers to each other as well as to the metal plates. The composite gear has composite gear teeth which consist of one or more metal gear teeth portions sandwiched between two thermoplastic gear teeth portions. The thermoplastic gear teeth portions extend outwardly from the metal gear teeth portions so that the thermoplastic teeth portions absorb loads under normal operating conditions. Under abnormal conditions such as when an abrupt stop occurs, the thermoplastic portions of the gear teeth are compressed and the higher torque forces resulting from the abnormal condition are absorbed by the metal gear teeth portions. Unique tooling and manufacturing methods are also described to enable the composite gear to be made without overmolding the metal gear teeth portions.

REFERENCES:
patent: 2720119 (1955-10-01), Sherman
patent: 3469468 (1969-09-01), Cozzarin et al.
patent: 3504562 (1970-04-01), Hirych
patent: 3557424 (1971-01-01), Heathswaite et al.
patent: 3590456 (1971-07-01), Seaman
patent: 3591909 (1971-07-01), Bebbington, Jr.
patent: 3602058 (1971-08-01), Beddoe
patent: 3605513 (1971-09-01), Sugimoto
patent: 3719103 (1973-03-01), Streander
patent: 3730009 (1973-05-01), Mead et al.
patent: 3733921 (1973-05-01), Carveth
patent: 4174643 (1979-11-01), Tsukamoto
patent: 4332574 (1982-06-01), Aoyama et al.
patent: 4472164 (1984-09-01), Pusch et al.
patent: 4589860 (1986-05-01), Bradenstein et al.
patent: 4696200 (1987-09-01), Pezzoli
patent: 4827589 (1989-05-01), Friedrichs
patent: 4942776 (1990-07-01), Quirk et al.
patent: 5307705 (1994-05-01), Fenelon
patent: 5438732 (1995-08-01), Engels et al.

Affiliated with

Also associated with

Rating

Composite gear and method of making same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Composite gear and method of making same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composite gear and method of making same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1416436