US3704919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial antifriction bearing
Assignee: Individual
•
Filing: 1970-12-07
•
Granted: 1972-12-05
•
Expires: 1990-12-07
Abstract
Abstract An axial roller bearing assembly adapted to move parallel to the axis of a shaft which carries the assembly. The shaft is circumferentially enclosed at least in part by a sleeve member which extends more than half way around the shaft and which is spaced therefrom to define between the sleeve member and the shaft longitudinal paths of movement for a plurality of rows of roller bodies. Each row of roller bodies is guided for movement along an endless path extending between the sleeve member and the shaft, around the ends of the sleeve member, and along the exterior of the sleeve member. The endless path of movement for each row of roller bodies has a load-carrying zone situated between the sleeve member and the shaft and a return zone situated at the exterior of the sleeve member. Each of the roller bodies has a central elongated portion of hourglass configuration conforming substantially to the circumferential curvature of the shaft, and this central elongated portion is situated between a pair of tapered end portions of each roller body, these end portions being symmetrically arranged with respect to the central elongated portion. The end portions and the central elongated portion of each roller body are interconnected by a pair of symmetrically arranged cylindrical portions which directly engage the external surface of the shaft and the internal surface of sleeve member at the loadcarrying zone of each endless path for each row of roller bodies.
Inventors
- 👤 Georg Titt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:10
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/004; F16C29/04; F16C29/06; F16C29/0602; F16C29/0609; F16C29/0676; F16C29/068; F16C29/0683; F16C33/00; F16C33/30; F16C33/34; F16C33/36; F16C33/46; F16C33/50; F16C33/506; F16C2300/00; F16C2300/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
286 words
An axial roller bearing assembly comprising an elongated shaft and a sleeve member extending circumferentially more than half way around the shaft and being spaced therefrom to define between the sleeve member and the shaft a load-carrying zone, a plurality or rows of roller bodies extending parallel to the axis of said shaft, each roller body having a central elongated portion of hourglass configuration conforming substantially to the circumferential curvature of the shaft and each roller body having a pair of symmetrically arranged tapered end portions between which said central elongated portion is located, each roller body also having a pair of symmetrically arranged cylindrical portions situated between and forming a transition between the end portions and central elongated portion of each roller body, said cylindrical portions of each roller body directly engaging the exterior surface of the shaft and the interior surface of said sleeve member at the load-carrying zone, and means coacting with said roller bodies for forming for each row of roller bodies an endless path of movement extending parallel to the axis of said shaft through the load-carrying zone, around the ends of said sleeve member, and along the exterior thereof, the means which forms the endless path for each row of roller bodies including a cage means coacting with the roller bodies of each row for maintaining them at a given distance from each other in each row, said cage means having resilient portions engaging said cylindrical portions of each roller body on opposite sides of the longitudinal axis of each roller body for maintaining the roller bodies of each row distributed longitudinally in each row without clearance while permitting displacement of the roller bodies circumferentially with respect to said shaft.
Claim 2
Dependent Claim
286 words
An axial roller bearing assembly comprising an elongated shaft and a sleeve member extending circumferentially more than half way around the shaft and being spaced therefrom to define between the sleeve member and the shaft a load-carrying zone, a plurality or rows of roller bodies extending parallel to the axis of said shaft, each roller body having a central elongated portion of hourglass configuration conforming substantially to the circumferential curvature of the shaft and each roller body having a pair of symmetrically arranged tapered end portions between which said central elongated portion is located, each roller body also having a pair of symmetrically arranged cylindrical portions situated between and forming a transition between the end portions and central elongated portion of each roller body, said cylindrical portions of each roller body directly engaging the exterior surface of the shaft and the interior surface of said sleeve member at the load-carrying zone, and means coacting with said roller bodies for forming for each row of roller bodies an endless path of movement extending parallel to the axis of said shaft through the load-carrying zone, around the ends of said sleeve member, and along the exterior thereof, the means which forms the endless path for each row of roller bodies including a cage means coacting with the roller bodies of each row for maintaining them at a given distance from each other in each row, said cage means having resilient portions engaging said cylindrical portions of each roller body on opposite sides of the longitudinal axis of each roller body for maintaining the roller bodies of each row distributed longitudinally in each row without clearance while permitting displacement of the roller bodies circumferentially with respect to said shaft.
Claim 3
Dependent Claim
77 words
The combination of claim 1 and wherein said means which forms the endless paths of movement for the rows of roller bodies includes a cylinder in which said sleeve member is located, said cylinder having directed toward sleeve member a surface formed with longitudinal grooves in which the rows of roller bodies are accommodated at the exterior of said sleeve member, and said cylinder being formed at the ends of said grooves thereof with interior tapered portions.
Claim 4
Dependent Claim
16 words
The combination of claim 2 and wherein elongated channels of U-shaped cross section line said grooves.
Claim 5
Dependent Claim
65 words
The combination of claim 1 and wherein said cage means includes pairs of adjoining curved members engaging the roller bodies and a hinge pin hingedly interconnecting each pair of adjoining curved members, said cage means including links extending along the ends of the roller bodies with each link having a pivotal connection with one hinge pin and a press-fit connection with the next hinge pin.
Claim 6
Dependent Claim
40 words
The combination of claim 4 and wherein each curved member has curved extensions forming the resilient positions engaging the cylindrical portions of each roller body and having a smaller radius of curvature than said cylindrical portions of each roller body.
Claim 7
Dependent Claim
28 words
The combination of claim 5 and wherein said hinge pins and links are located beyond the axes of said roller bodies between said axes and said sleeve member.
Claim 8
Dependent Claim
71 words
The combination of claim 1 and wherein said endless elastic band is made of plastic and is formed with cutouts in which the roller bodies are located with said cutouts being separated by transverse portions of said elastic band, and curved resilient members engaging said transverse portions and extending between the latter and said roller bodies, said resilient members forming the resilient portions engaging the cylindrical portions of said roller bodies.
Claim 9
Dependent Claim
95 words
The combination of claim 1 and wherein said means which forms said endless paths of movement for the rows of roller bodies includes a pair of reversing rings respectively fixed to ends of said sleeve member and each reversing ring carrying a plurality of guide channels between which said rows of roller bodies are guided around the ends of said sleeve member, said reversing rings having tapered portions which at the ends of said sleeve member extend outwardly beyond the outer surface thereof and which taper inwardly toward the outer surface of said sleeve member.
Claim 10
Dependent Claim
164 words
The combination of claim 1 and wherein said means which forms the endless paths for said rows of roller bodies includes a pair of end rings respectively situated beyond said sleeve member and surrounding said shaft with said end rings being respectively formed with annular grooves extending around said shaft and having hollow interiors directed towards the ends of said sleeve member, said grooves respectively conforming substantially to paths of movement described by said roller bodies as they move around the ends of said sleeve member, and said means which forms said endless paths further including a cylinder in which said sleeve member is located and defining with said sleeve member return portions of said paths along which the rows of roller bodies move at the exterior of said sleeve member, said cylinder surrounding and engaging said end rings and pressing the latter against said exterior surface of said shaft so that said end rings also form a seal with respect to said shaft.
Claim 11
Dependent Claim
14 words
The combination of claim 1 and wherein said sleeve member entirely surrounds said shaft.
Claim 12
Dependent Claim
267 words
An axial roller bearing assembly comprising an elongated shaft and a sleeve member extending circumferentially more than half way around the shaft and being spaced therefrom to define between the sleeve member and the shaft a load-carrying zone, a plurality or rows of roller bodies extending parallel to the axis of said shaft, each roller body having a central elongated portion of hourglass configuration conforming substantially to the circumferential curvature of the shaft and each roller body having a pair of symmetrically arranged tapered end portions between which said central elongated portion is located, each roller body also having a pair of symmetrically arranged cylindrical portions situated between and forming a transition between the end portions and central elongated portion of each roller body, said cylindrical portions of each roller body directly engaging the exterior surface of the shaft and the interior surface of said sleeve member at the load-carrying zone, and means coacting with said roller bodies for forming for each row of roller bodies an endless path of movement extending parallel to the axis of said shaft through the load-carrying zone, around the ends of said sleeve member, and along the exterior thereof, said sleeve member extending only part way circumferentially around said shaft and a support means fixedly carrying said shaft at a part thereof which is situated beyond said sleeve member, a cylinder surrounding said sleeve member and formed with interior grooves along which said rows of roller bodies travel at the exterior of said sleeve member, and clamp means gripping and compressing said cylinder for regulating the clearance of the roller bodies.
Claim 13
Dependent Claim
267 words
An axial roller bearing assembly comprising an elongated shaft and a sleeve member extending circumferentially more than half way around the shaft and being spaced therefrom to define between the sleeve member and the shaft a load-carrying zone, a plurality or rows of roller bodies extending parallel to the axis of said shaft, each roller body having a central elongated portion of hourglass configuration conforming substantially to the circumferential curvature of the shaft and each roller body having a pair of symmetrically arranged tapered end portions between which said central elongated portion is located, each roller body also having a pair of symmetrically arranged cylindrical portions situated between and forming a transition between the end portions and central elongated portion of each roller body, said cylindrical portions of each roller body directly engaging the exterior surface of the shaft and the interior surface of said sleeve member at the load-carrying zone, and means coacting with said roller bodies for forming for each row of roller bodies an endless path of movement extending parallel to the axis of said shaft through the load-carrying zone, around the ends of said sleeve member, and along the exterior thereof, said sleeve member extending only part way circumferentially around said shaft and a support means fixedly carrying said shaft at a part thereof which is situated beyond said sleeve member, a cylinder surrounding said sleeve member and formed with interior grooves along which said rows of roller bodies travel at the exterior of said sleeve member, and clamp means gripping and compressing said cylinder for regulating the clearance of the roller bodies.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |