US3581592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Worm gear
Assignee: HA Waldrich GmbH
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Filing: 1969-04-09
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Granted: 1971-06-01
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Expires: 1989-04-09
Abstract
Abstract A worm gear having a worm and a worm rack is characterized by circulating balls extending over the entire length of the worm gears between the worm and the worm rack, ball supports adjacent the circumferential surface of the worm, a channellike ball outlet upon one end of the worm, a return bore passage extending in the longitudinal direction and a channellike ball inlet to the worm gears.
Inventors
- 👤 Karl H Roehrs
- 👤 Josef Berkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:19
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/24; F16H25/2409; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19819; Y10T74/19949; Y10T74/19963; Y10T74/19972; Y10T74/19977
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
A worm gear, comprising a worm, a worm rack, a plurality of balls extending over the entire length of the worm gears between said worm and said worm rack, a ball-supporting band fixed to the head of the worm profile, the thickness of the band being less than the play between said worm and said worm rack, said band extending sideways at least beyond the center of the balls supported by the band, means forming an inlet passage for the balls adjacent one end of the worm, means forming an outlet passage for the balls adjacent the opposite end of the worm, and means forming a longitudinal passage for the balls which is connected with said inlet passage and said outlet passage.
Claim 2
Dependent Claim
122 words
A worm gear, comprising a worm, a worm rack, a plurality of balls extending over the entire length of the worm gears between said worm and said worm rack, a ball-supporting band fixed to the head of the worm profile, the thickness of the band being less than the play between said worm and said worm rack, said band extending sideways at least beyond the center of the balls supported by the band, means forming an inlet passage for the balls adjacent one end of the worm, means forming an outlet passage for the balls adjacent the opposite end of the worm, and means forming a longitudinal passage for the balls which is connected with said inlet passage and said outlet passage.
Claim 3
Dependent Claim
93 words
A worm gear, comprising a worm, a worm rack, a plurality of balls extending over the entire length of the worm gears between said worm and said worm rack, means supporting said balls around said worm, a cover fixed to a front surface of said worm and having an inlet passage for the balls, another cover fixed to the opposite front surface of said worm and having an outlet passage for the balls, and means forming a longitudinal passage for the balls which is connected with said inlet passage and said outlet passage.
Claim 4
Dependent Claim
93 words
A worm gear, comprising a worm, a worm rack, a plurality of balls extending over the entire length of the worm gears between said worm and said worm rack, means supporting said balls around said worm, a cover fixed to a front surface of said worm and having an inlet passage for the balls, another cover fixed to the opposite front surface of said worm and having an outlet passage for the balls, and means forming a longitudinal passage for the balls which is connected with said inlet passage and said outlet passage.
Claim 5
Dependent Claim
133 words
A worm gear, comprising a worm, a worm rack, a plurality of balls extending over the entire length of the worm gears between said worm and said worm rack, means supporting said balls around said worm and having a fixed casing located above said worm and engaging said balls, means forming an inlet passage for the balls adjacent one end of the worm, means forming an outlet passage for the balls adjacent the opposite end of the worm, said two means comprising grooves formed in the front surfaces of the worm for the inlet and outlet of the balls and covers covering said grooves, parts of said grooves being formed in said covers, and means forming a longitudinal passage for the balls which is connected with said inlet passage and said outlet passage.
Claim 6
Dependent Claim
133 words
A worm gear, comprising a worm, a worm rack, a plurality of balls extending over the entire length of the worm gears between said worm and said worm rack, means supporting said balls around said worm and having a fixed casing located above said worm and engaging said balls, means forming an inlet passage for the balls adjacent one end of the worm, means forming an outlet passage for the balls adjacent the opposite end of the worm, said two means comprising grooves formed in the front surfaces of the worm for the inlet and outlet of the balls and covers covering said grooves, parts of said grooves being formed in said covers, and means forming a longitudinal passage for the balls which is connected with said inlet passage and said outlet passage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |