Seal for worm gear speed reducer

Details Seal for worm gear speed reducer Seal for worm gear speed reducer

2004-06-22

2010-02-16

King, Roy (Department: 1793)

Metal treatment

Process of modifying or maintaining internal physical...

Carburizing or nitriding using externally supplied carbon or...

C074S425000

Reexamination Certificate

active

07662240

ABSTRACT:
The performance of a worm assembly seal is improved by (1) the use of a hardened steel worm with a bronze worm gear; (2) a tribological coating on one or both of the worm thread or spiral and the gear teeth; 3) a tribological coating on one or both of the input or output shaft or shaft sleeves; or (4) a tribological coating applied to the worm thread, the gear teeth, the input and output shafts or shaft sleeves, or combinations thereof. In each of the approaches, the worm, worm gear, and input and output shafts or shaft sleeves can have surface finishing treatments. Additionally, in each of the three approaches, carbon or carbon
itrogen concentration gradients can be added to the worm.

REFERENCES:
patent: 2207289 (1940-07-01), Fleischmann
patent: 3368263 (1968-02-01), Harris, Jr.
patent: 4692305 (1987-09-01), Rangaswamy et al.
patent: 4697476 (1987-10-01), Maxwell
patent: 4851267 (1989-07-01), Miyauchi et al.
patent: 4946747 (1990-08-01), Bergmann et al.
patent: 5019182 (1991-05-01), Arimi
patent: 5158629 (1992-10-01), Zobbi
patent: 5186068 (1993-02-01), Heller
patent: 5279174 (1994-01-01), Minegishi
patent: 5404060 (1995-04-01), Nakahashi et al.
patent: 5595613 (1997-01-01), Hatano et al.
patent: 6151778 (2000-11-01), Woolf et al.
patent: 6309475 (2001-10-01), Takayama et al.
patent: 6315646 (2001-11-01), Hoyashita
patent: 2005/0011748 (2005-01-01), Beck et al.
patent: 120056 (1975-03-01), None
patent: 3713920 (1988-09-01), None
patent: 10141696 (2003-03-01), None
patent: 567281 (1945-02-01), None
patent: 607808 (1948-09-01), None
patent: 1221321 (1968-02-01), None
Voronenko, B. I., Romatovskii, Yu. I., Metallovedenie i Termicheskaya Obrabotka Metallov: Bainitic High-Strength Cast Iron With Spheroidal Graphite, Oct. 1991, No. 10, pp. 28-34.
Davis, Joseph R. et al., ASM Metals Handbook, Materials Park, Ohio, Heat Treating: Quenching of Steel, vol. 4, Mar. 1990, pp. 88-89.
Davis, Joseph R. et al., ASM Metals Handbook, Materials Park, Ohio, Heat Treating: Vacuum Carburizing, vol. 4, Mar. 1990, pp. 348-351.
Davis, Joseph R. et al., ASM Metals Handbook, Materials Park, Ohio, Heat Treating: Gas Carburizing, vol. 4, Mar. 1990, pp. 312-314.
Davis, Joseph R. et al., ASM Metals Handbook, Materials Park, Ohio, Heat Treating: Carbonitriding, vol. 4, Mar. 1990, pp. 376-377.
Von Fritz Brautigam, Remscheid—“Oberflächenhärten von Schnecken für Schneckengetriebe”—Werkstatt und Betrieb 107 (1974) 10—pp. 619-620.
CR SEALS Catalog 457010 24A & 25A—“The Shaft Requirements”, pp. 24A-25A.
“Innovative Applications of Induction Heat Treating”; Advanced Materials & Processes 5/95;pp. 40S-40V.
SKT.com website; “Suggestions for seal selection and installation” (Oct. 19, 2002) 18 pages.
International Search Report (6 pages) and Written Opinion (7 pages) from corresponding Int'l App. No. PCT/US2005/021075.

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