Patent US3598213A successfully refreshed from Google Patents.
US3598213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal retainer ring for freewheel clutch
Assignee: Ringspann Albrecht Maurer KG
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Filing: 1970-01-12
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Granted: 1971-08-10
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Expires: 1990-01-12
Abstract
Abstract A retainer ring for freewheel clutches is assembled from metal ring links which are pivotably connected to one another and support tiltable sprags between them. The links comprise flanges arranged in pairs opposite to one another and connected by bolts. Studs project from the flanges to the inner side of each link, and the sprags are tiltably mounted between the studs. Two different embodiments of such retainer rings are disclosed. In one embodiment first-type links, on which the tiltable sprags are mounted, are arranged in alternating order with second-type links not provided with sprags. In a second embodiment ring links of one type only are used which hold the sprags between studs on one side of the bolt while they are hinged with the other side on the studs of the adjacent link.
Inventors
- 👤 Emil Giese
- 👤 Ruprecht Maurer
- 👤 Albrecht Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:50
CPC Classifications
F; F16; F16D; F16D41/00; F16D41/06; F16D41/069; F16D41/07
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
307 words
A metal retainer ring for a freewheel clutch which drivingly connects a first rotatable clutch member having a convexcylindrical bearing surface and a second rotatable clutch member having a concave-cylindrical bearing surface in coaxial alignment with the first bearing surface, the retainer ring comprising (a) first-type ring links comprising two oblong metal plates (7) arranged opposite to one another and being provided with three equidistant holes, a bolt (26) riveted with its free ends in the central hole of each plate connecting the plates, and four studs (10) in the outer holes of each plate aligned in pairs and facing one another; (b) second-type ring links comprising two substantially Z-shaped metal plates (17) each having a central portion and free branches arranged opposite to one another and having a hole each in their central portion, the free branches of the Z-configuration each defining with the central portion a catch on either side of the hole between them and the central portion, the catches being equidistantly spaced from the hole, a bolt (5) riveted with its ends in the holes; connecting the plates (c) tiltable sprags (3) for drivingly connecting the first and second clutch members, the sprags being provided with grooves in their faces extending through the centers of the faces, the studs engaging in the grooves whereby the sprags are tiltably mounted between opposite studs of the first-type of ring links; the second-type ring links being arranged between the first-type ring links in alternating order with the catches on one side of the second-type ring links embracing the studs of one first-type ring link and the catches on the other side embracing the studs of another first-type ring link, and (d) spring means operatively engaging the studs for urging the tiltable sprags with their clamping surfaces into contact with the bearing surfaces of the clutch members.
Claim 2
Dependent Claim
307 words
A metal retainer ring for a freewheel clutch which drivingly connects a first rotatable clutch member having a convexcylindrical bearing surface and a second rotatable clutch member having a concave-cylindrical bearing surface in coaxial alignment with the first bearing surface, the retainer ring comprising (a) first-type ring links comprising two oblong metal plates (7) arranged opposite to one another and being provided with three equidistant holes, a bolt (26) riveted with its free ends in the central hole of each plate connecting the plates, and four studs (10) in the outer holes of each plate aligned in pairs and facing one another; (b) second-type ring links comprising two substantially Z-shaped metal plates (17) each having a central portion and free branches arranged opposite to one another and having a hole each in their central portion, the free branches of the Z-configuration each defining with the central portion a catch on either side of the hole between them and the central portion, the catches being equidistantly spaced from the hole, a bolt (5) riveted with its ends in the holes; connecting the plates (c) tiltable sprags (3) for drivingly connecting the first and second clutch members, the sprags being provided with grooves in their faces extending through the centers of the faces, the studs engaging in the grooves whereby the sprags are tiltably mounted between opposite studs of the first-type of ring links; the second-type ring links being arranged between the first-type ring links in alternating order with the catches on one side of the second-type ring links embracing the studs of one first-type ring link and the catches on the other side embracing the studs of another first-type ring link, and (d) spring means operatively engaging the studs for urging the tiltable sprags with their clamping surfaces into contact with the bearing surfaces of the clutch members.
Claim 3
Dependent Claim
27 words
A metal retainer ring as claimed in claim 1, and further comprising cylindrical sleeves rotatably mounted on the bolts of the first and second ring link types.
Claim 4
Dependent Claim
54 words
A metal retainer ring as claimed in claim 1, wherein the spring means are helical springs mounted adjacent one face of each sprag on the stud, the springs being provided with long ends, one of which bears against the sprag while the other end rests against the bolt of the adjacent second-type ring link.
Claim 5
Dependent Claim
22 words
A metal retainer ring as claimed in claim 1, wherein the studs are loosely inserted in the holes of the metal plates.
Claim 6
Dependent Claim
21 words
A metal retainer ring as claimed in claim 1, wherein the studs are riveted into the holes of the metal plates.
Claim 7
Dependent Claim
26 words
A metal retainer ring as claimed in claim 1, wherein the studs of the first-type ring links are provided with shoulders against which the sprags rest.
Claim 8
Dependent Claim
50 words
A metal retainer ring as claimed in claim 1, wherein the Z-shaped metal plates of the second-type ring links are provided with projecting portions, the distance between these portions in radial direction of the clutch being only slightly smaller than the distance between the outer and inner cylindrical bearing surfaces.
Claim 9
Dependent Claim
255 words
A metal retainer ring for a freewheel clutch which drivingly connects a first rotatable clutch member having a convex-cylindrical bearing surface and a second rotatable clutch member having a concave-cylindrical bearing surface in coaxial alignment with the first bearing surface, the retainer ring comprising (a) substantially Z-shaped metal plates (33) arranged in pairs opposite to one another having central portions and branches and having holes in their central portions and in the free ends of their branches, the three holes of each plate being in line with one another, (b) bolts (39) riveted into the central holes of two opposite plates, thereby connecting the plates to form a ring link; (c) studs (41) in the holes on one side of the bolt and facing one another; (d) tiltable sprags (32) for drivingly connecting the first and second clutch member, the sprags being provided with grooves in their faces extending through the centers of their faces, the studs engaging in the grooves whereby the sprags are mounted between the opposite studs on one side of the bolt; (e) spring means mounted on one of the studs supporting each sprag operatively engaging the sprag for urging the sprags with their clamping surfaces into contact with the bearing surfaces of the clutch members, each ring link being hinged with the holes on the other side of the bolt on the studs of the adjacent ring link, thereby forming a retainer ring and securing the sprag in the adjacent link against displacement in the circumferential direction of the clutch.
Claim 10
Dependent Claim
255 words
A metal retainer ring for a freewheel clutch which drivingly connects a first rotatable clutch member having a convex-cylindrical bearing surface and a second rotatable clutch member having a concave-cylindrical bearing surface in coaxial alignment with the first bearing surface, the retainer ring comprising (a) substantially Z-shaped metal plates (33) arranged in pairs opposite to one another having central portions and branches and having holes in their central portions and in the free ends of their branches, the three holes of each plate being in line with one another, (b) bolts (39) riveted into the central holes of two opposite plates, thereby connecting the plates to form a ring link; (c) studs (41) in the holes on one side of the bolt and facing one another; (d) tiltable sprags (32) for drivingly connecting the first and second clutch member, the sprags being provided with grooves in their faces extending through the centers of their faces, the studs engaging in the grooves whereby the sprags are mounted between the opposite studs on one side of the bolt; (e) spring means mounted on one of the studs supporting each sprag operatively engaging the sprag for urging the sprags with their clamping surfaces into contact with the bearing surfaces of the clutch members, each ring link being hinged with the holes on the other side of the bolt on the studs of the adjacent ring link, thereby forming a retainer ring and securing the sprag in the adjacent link against displacement in the circumferential direction of the clutch.
Claim 11
Dependent Claim
42 words
A metal retainer ring as claimed in claim 8, wherein the branches of the Z-shaped metal plates which are hinged on the studs of the adjacent link are bent to the outside in parallel direction to the remaining portions of the plates.
Claim 12
Dependent Claim
20 words
A metal retainer ring as claimed in claim 8, and further comprising cylindrical sleeves (40) rotatably mounted on the bolts.
Claim 13
Dependent Claim
53 words
A metal retainer ring as claimed in claim 8, wherein the spring means are helical springs mounted adjacent one face of each sprag on the stud, the springs being provided with long ends one of which bears against the sprag and the other one resting against the bolt of the adjacent ring link.
Claim 14
Dependent Claim
45 words
A metal retainer ring as claimed in claim 8, wherein the Z-shaped metal plates are provided with projecting portions, the distance between these portions in radial direction of the clutch being only slightly smaller than the distance between the outer and inner cylindrical bearing surfaces.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |