GB1487417A – Roller type epicyclic drive
– Google Patents
GB1487417A – Roller type epicyclic drive
– Google Patents
Roller type epicyclic drive
Info
Publication number
GB1487417A
GB1487417A
GB54647/74A
GB5464774A
GB1487417A
GB 1487417 A
GB1487417 A
GB 1487417A
GB 54647/74 A
GB54647/74 A
GB 54647/74A
GB 5464774 A
GB5464774 A
GB 5464774A
GB 1487417 A
GB1487417 A
GB 1487417A
Authority
GB
United Kingdom
Prior art keywords
roller
shaft
segment
pressure
helicoidal
Prior art date
1974-01-04
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB54647/74A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1974-01-04
Filing date
1974-12-18
Publication date
1977-09-28
1974-12-18
Application filed by Individual
filed
Critical
Individual
1977-09-28
Publication of GB1487417A
publication
Critical
patent/GB1487417A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F16H—GEARING
F16H13/00—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members
F16H13/06—Gearing for conveying rotary motion with constant gear ratio by friction between rotary members with members having orbital motion
Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
Y10T74/00—Machine element or mechanism
Y10T74/18—Mechanical movements
Y10T74/1836—Rotary to rotary
Abstract
1487417 Friction gearing S R WOOD 18 Dec 1974 [4 Jan 1974] 54647/74 Heading F2Q In an epicyclic friction drive of fixed velocity ratio, Fig. 1, equally-spaced rollers 31 make rolling contact, both with a track 32 on a shaft 33 and with the inner surface of a radially contractible helicoidal element 26, which is supported under inwardly-directed pressure by a series of annular segments 19, each segment being under pressure from an adjacent component 17, and each roller 31 is rotatably mounted on a pin 38 in a manner permitting some floating displacement, in a radial direction with respect to the common shaft axis, of each roller axis, thereby ensuring that radial pressure is exerted at the surfaces in rolling contact, so as to maintain tractive engagement. The helicoidal element 26 has at each end a tab 27, Fig. 5, and each segment 19 has a tab 24, which together key these members against rotation. Each roller pin 38 with needle bearings 34, has an eccentrically offset shank portion 36, Fig. 2, rotatably mounted in an arm 41 projecting from the body 43 of a planet carrier member 42, which in turn is secured by screws 45 to shaft 44. Each segment 19 has outward conical portions 21 which are subjected to an inwardly-directed wedging action by an inward conical surface 18 of a sleeve 17 under axial pressure from springs 20, against an opposing face of a ring 5, fixed within the housing formed by members 1, 2 and 3, Fig. 1. In an alternative embodiment, Fig. 3 (not shown), the roller has two integral sections of different diameters, axially separated, providing one rolling surface engaging only the helicoidal outer race, and a separate rolling surface engaging only the shaft inner race.
GB54647/74A
1974-01-04
1974-12-18
Roller type epicyclic drive
Expired
GB1487417A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
AU6420474
1974-01-04
Publications (1)
Publication Number
Publication Date
GB1487417A
true
GB1487417A
(en)
1977-09-28
Family
ID=3748914
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB54647/74A
Expired
GB1487417A
(en)
1974-01-04
1974-12-18
Roller type epicyclic drive
Country Status (3)
Country
Link
US
(1)
US3954029A
(en)
DE
(1)
DE2461958A1
(en)
GB
(1)
GB1487417A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2248670A
(en)
*
1990-10-12
1992-04-15
Takashi Takahashi
Epicyclic friction gearing
Families Citing this family (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2832934A1
(en)
*
1978-07-27
1980-02-14
Friedrich Schley Ingenieur Bue
GEARBOX TRANSMISSION WITH FRICTION RING
US5041066A
(en)
*
1989-09-28
1991-08-20
Wood Samuel R
Cylindrical roller transmission
US20050153812A1
(en)
*
2004-01-12
2005-07-14
Locust, Usa, Inc.
Small-size traction drive transmission system for use in microturbine-powered aircraft
US7270296B2
(en)
*
2004-01-12
2007-09-18
Locust Usa Inc.
Small-size high-speed transmission system for use in microturbine-powered aircraft
US7575192B1
(en)
2005-12-16
2009-08-18
Locust Usa, Inc.
Transmission system for use in microturbine-powered applications
Family Cites Families (5)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB152288A
(en)
*
1919-10-11
1921-06-02
Krupp Ag
Improvements in or relating to friction roller gearing
US2815685A
(en)
*
1954-03-25
1957-12-10
Parrett John Thomas
Speed changing mechanism
US2896480A
(en)
*
1957-01-09
1959-07-28
Robbins & Myers
Change speed device
US3248960A
(en)
*
1959-11-13
1966-05-03
Roller Gear Ltd
Variable speed drive transmission
US3889554A
(en)
*
1974-01-09
1975-06-17
Brett Jason Sinclair
Roller transmission
1974
1974-12-17
US
US05/533,509
patent/US3954029A/en
not_active
Expired – Lifetime
1974-12-18
GB
GB54647/74A
patent/GB1487417A/en
not_active
Expired
1974-12-31
DE
DE19742461958
patent/DE2461958A1/en
not_active
Withdrawn
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2248670A
(en)
*
1990-10-12
1992-04-15
Takashi Takahashi
Epicyclic friction gearing
GB2248670B
(en)
*
1990-10-12
1994-11-16
Takashi Takahashi
Friction type transmission
Also Published As
Publication number
Publication date
US3954029A
(en)
1976-05-04
DE2461958A1
(en)
1975-07-17
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ITSUPOKURATSUCHI
Legal Events
Date
Code
Title
Description
1978-02-08
PS
Patent sealed [section 19, patents act 1949]
1986-08-06
PCNP
Patent ceased through non-payment of renewal fee
