Patent EP0272197A2 successfully refreshed from Google Patents.
Patent US3657937A successfully refreshed from Google Patents.
US3657937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination brake and break-over mechanism for variable speed control mechanism
Assignee: Reliance Electric Co
•
Filing: 1970-07-10
•
Granted: 1972-04-25
•
Expires: 1990-07-10
Abstract
Abstract A variable speed system of the type including a V-pulley having an axially shiftable pulley disc wherein the improvement comprises first rotary means, such as a cam, journaled in the system, first means, such as a cam follower, for drivingly connecting the first rotary means to the shiftable pulley disc axially to move the disc when the first rotary means is driven, second rotary means, such as a manually adjustable knob, and second means for drivingly connecting the second rotary means to the first rotary means. This second means includes a rotary member positively drivingly connected to the first rotary means, and spring means for providing a torque-limited, yieldable driving connection between the said member and the second rotary means. The second means also includes a friction plate disposed axially between the said member and a relatively stationary portion of the system, the spring means being effective yieldably to urge the member and the friction plate against the stationary portion to provide a friction brake resisting rotation of said member.
Inventors
- 👤 George M Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:16
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/52; F16H55/56; F16H61/00; F16H61/66; F16H61/662
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
In a variable speed system of the type including a V-pulley having an axially shiftable pulley disc, the improvement comprising first rotary means journalled in said system, first means for drivingly connecting said first rotary means to said pulley disc axially to move said pulley disc when said first rotary means is driven, second rotary means, and second means for drivingly connecting said second rotary means to said first rotary means, said second means including a rotary member drivingly connected to said first rotary means, and spring means for providing a torque-limited yieldable driving connection between said member and said second rotary means.
Claim 2
Dependent Claim
103 words
In a variable speed system of the type including a V-pulley having an axially shiftable pulley disc, the improvement comprising first rotary means journalled in said system, first means for drivingly connecting said first rotary means to said pulley disc axially to move said pulley disc when said first rotary means is driven, second rotary means, and second means for drivingly connecting said second rotary means to said first rotary means, said second means including a rotary member drivingly connected to said first rotary means, and spring means for providing a torque-limited yieldable driving connection between said member and said second rotary means.
Claim 3
Dependent Claim
36 words
The invention of claim 1 in which said second rotary means and said member are movable about a common axis, said spring means being effective axially to urge said second rotary means and said member together.
Claim 4
Dependent Claim
58 words
The invention of claim 2 in which said member is mounted for at least slight axial movement toward and away from a relatively stationary portion of said system, and a friction plate disposed axially between said member and said stationary portion, said spring means being effective yieldably to urge said member and said plate against said stationary portion.
Claim 5
Dependent Claim
72 words
The invention of claim 3 in which said second rotary means includes a manually adjustable knob having an axially inner surface provided with a plurality of peripherally spaced apart notches, and in which said member provides an axially outer face having a plurality of axially outwardly extending peripherally spaced apart lugs engaging respectively said notches, said spring means being effective yieldably to maintain the engagement of said lugs respectively in said notches.
Claim 6
Dependent Claim
25 words
The invention of claim 4 in which said lugs are equally peripherally spaced and there are an equal number of said notches equally peripherally spaced.
Claim 7
Dependent Claim
29 words
The invention of claim 5 in which said spring means includes a coiled compression spring urging said knob, said member and said friction plate axially toward said stationary portion.
Claim 8
Dependent Claim
57 words
The invention of claim 6 in which said second means includes a journal mounted shaft on which said member is splined for axial movement only relative thereto, said shaft penetrating said axially inner surface of said knob, and said coiled spring being disposed concentrically about the axially outer end of said shaft to bear against said knob.
Claim 9
Dependent Claim
60 words
The invention of claim 7 including stop means for defining the limits of rotational movement of said first rotary means, whereby when said knob is rotated to drive said first rotary means to the end of its travel in one direction, further rotation of said knob in the same direction will produce relative movement between said knob and said member.
Claim 10
Dependent Claim
37 words
The invention of claim 1 including a friction plate disposed between said member and a relatively stationary portion of said system, said spring means being effective to urge said member and said plate against said stationary portion.
Claim 11
Dependent Claim
44 words
The invention of claim 9 in which said second means includes a shaft, said member being mounted on said shaft for rotation therewith, and said second rotary means being yieldably drivingly connected to said member by said spring means for rotation with said shaft.
Claim 12
Dependent Claim
96 words
The inVention of claim 10 in which said member is splined to said shaft for at least slight axial movement toward and away from said stationary portion, said member having an axially outwardly facing surface, said second rotary means providing an axially inwardly facing surface, one of said surfaces providing a plurality of peripherally spaced apart notches and the other of said surfaces providing a plurality of peripherally spaced apart lugs for engaging respectively said notches, said spring means being effective yieldably to urge said surfaces together to maintain engagement of said lugs in said notches.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |