US3735645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmission and housing
Assignee: Hoover Universal Inc
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Filing: 1971-06-09
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Granted: 1973-05-29
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Expires: 1991-06-09
Abstract
Abstract Transmission for connecting a plurality of drive mechanisms to a corresponding plurality of input worms. The gearing is contained in a housing having a plastic cover provided with flexible recessed arms adapted to engage the shafts of the worms to constitute bearings, the arms being received in recesses in the housing to retain them in assembled relation.
Inventors
- 👤 J Pickles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/039; B; B60; B60N; B60N2/00; B60N2/02; B60N2/04; B60N2/16; B60N2/1635; B60N2/1655; E; E05; E05F; E05F11/00; E05F11/38; E05F11/382; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; F16H57/031; E05Y; E05Y2900/00; E05Y2900/50; E05Y2900/53; E05Y2900/55; F16H2057/02039; F16H2057/02043; F16H2057/02082; F16H57/021; F16H2057/0213; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/21; Y10T74/2186
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
A transmission comprising a two-part housing structure for enclosing gearing including at least one transmission gear therein, one housing part comprising a wall having a pair of generally parallel spaced apart arms projecting laterally from one side of said wall, the free ends of said arms being movable toward and away from each other, said arms having adjacent their free ends confronting recesses defining shaft support and bearing means when said arms are in the position of closest approach, a second gear having a shaft portion received in said recesses, said other housing part having surfaces therein engaging said arms when said housing parts are assembled to retain said arms in the closest approach position while said parts remain in assembly.
Claim 2
Dependent Claim
121 words
A transmission comprising a two-part housing structure for enclosing gearing including at least one transmission gear therein, one housing part comprising a wall having a pair of generally parallel spaced apart arms projecting laterally from one side of said wall, the free ends of said arms being movable toward and away from each other, said arms having adjacent their free ends confronting recesses defining shaft support and bearing means when said arms are in the position of closest approach, a second gear having a shaft portion received in said recesses, said other housing part having surfaces therein engaging said arms when said housing parts are assembled to retain said arms in the closest approach position while said parts remain in assembly.
Claim 3
Dependent Claim
42 words
A transmission as defined in claim 1 in which said one housing part is a unitary structure formed of a resin having a low coefficient of friction so that the recessed arms constitute a low friction bearing support for said input gear.
Claim 4
Dependent Claim
33 words
A transmission as defined in claim 2 in which said wall is flexible and the portion of said wall intermediate said arms is flexed upon separation of the recessed portions of said arms.
Claim 5
Dependent Claim
23 words
A transmission as defined in claim 3 in which said one housing part is firmly affixed to said other housing part in assembly.
Claim 6
Dependent Claim
47 words
A transmission as defined in claim 3 in which said second gear is a worm having oppositely extending shaft portions, and said one housing part has two spaced pairs of arms, the arms of each pair cooperating to engage and rotatably support one of said shaft portions.
Claim 7
Dependent Claim
54 words
A transmission as defined in claim 5, said one housing part having an outwardly barbed tubular extension in alignment with said worm for receiving a flexible drive shaft extending through said extension and engageable with said worm, and for receiving the end of a sheath of the drive shaft on its barbed outer surface.
Claim 8
Dependent Claim
37 words
A transmission as defined in claim 5 in which a worm gear is received in said other housing part, and means in said other housing part supporting said worm gear for rotation in mesh with said worm.
Claim 9
Dependent Claim
63 words
A transmission as defined in claim 7 comprising a worm gear support shaft in said housing on which said worm gear is mounted, said one housing part having an opening receiving and locating a portion of said worm gear support shaft to locate the worm gear thereon in proper meshed relation with the worm carried by the arms on said one housing part.
Claim 10
Dependent Claim
53 words
A transmission as deFined in claim 3, said flexible wall having a channel at the side opposite said arms and in registration with the space between said arms to provide a local reduction in thickness to increase flexibility of said wall to provide for ready separation between the recessed free end portions thereof.
Claim 11
Dependent Claim
28 words
A transmission as defined in claim 9 in which said channel is straight and is in registration with the spaces between the arms of both pairs of arms.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |