Patent US3583251A successfully refreshed from Google Patents.
US3583251A
Expired / Lapsed
US
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Variable speed drive
Assignee: Hardinge Inc
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Filing: 1969-05-21
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Granted: 1971-06-08
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Expires: 1989-05-21
Abstract
Abstract This disclosure shows a V-belt drive mechanism by means of which a variety of different speeds can be obtained automatically for a lathe spindle or other driven part of a machine from a driving motor by means of a programmer acting through a hydraulic mechanism.
Inventors
- 👤 Anders Adolf Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:07
CPC Classifications
F; F16; F16H; F16H61/00; F16H61/66; F16H61/662
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
218 words
A variable speed transmission including: a. frame means, b. driving and driven pulleys, c. an intermediate pulley assembly including a pair of fixed pulley cones having belt-engaging faces spaced apart in opposed relation to each other, d. an axially movable belt-engaging pulley member arranged between the belt-engaging faces of said opposed pulley cones and movable toward and from said fixed pulley cones, e. belts cooperating with said driving and driven pulleys and with said fixed pulley cones, f. each of said belts also engaging a side of said movable pulley member, g. a carrier member having an intermediate portion and ends, said intermediate pulley assembly connected to said intermediate portion of said carrier member, h. said carrier member being movable toward and from said driving and driven pulleys and having one end pivotally attached to said frame means, i. power actuated means for moving said carrier member and having first and second ends, j. said power actuated means having said first end attached to the other end of said carrier member and said second end pivotally attached to said frame means, k. said carrier member and said power actuated means being positioned at substantially right angles to each other, and l. control means for limiting the extent of movement imparted to said carrier member by said power means.
Claim 2
Dependent Claim
218 words
A variable speed transmission including: a. frame means, b. driving and driven pulleys, c. an intermediate pulley assembly including a pair of fixed pulley cones having belt-engaging faces spaced apart in opposed relation to each other, d. an axially movable belt-engaging pulley member arranged between the belt-engaging faces of said opposed pulley cones and movable toward and from said fixed pulley cones, e. belts cooperating with said driving and driven pulleys and with said fixed pulley cones, f. each of said belts also engaging a side of said movable pulley member, g. a carrier member having an intermediate portion and ends, said intermediate pulley assembly connected to said intermediate portion of said carrier member, h. said carrier member being movable toward and from said driving and driven pulleys and having one end pivotally attached to said frame means, i. power actuated means for moving said carrier member and having first and second ends, j. said power actuated means having said first end attached to the other end of said carrier member and said second end pivotally attached to said frame means, k. said carrier member and said power actuated means being positioned at substantially right angles to each other, and l. control means for limiting the extent of movement imparted to said carrier member by said power means.
Claim 3
Dependent Claim
37 words
A transmission according to claim 1 and wherein: a. said power actuated means are a piston and cylinder, one of which is mounted on a stationary support and the other of which is connected with said carrier.
Claim 4
Dependent Claim
62 words
A transmission according to claim 2 and wherein: a. said cylinder is mounted on a stationary support and, b. said piston is connected to said carrier by means of a piston rod, c. a stop rod mounted in fixed relation to said piston rod, and d. cooperating parts on said cylinder and said stop rod for limiting the travel of said piston.
Claim 5
Dependent Claim
20 words
A variAble speed transmission as in claim 2 and including: a. means for varying the speed of said driving pulley.
Claim 6
Dependent Claim
31 words
A variable speed transmission as in claim 4 and wherein: a. said means for varying the speed of said driving pulley is controlled by means of a programmed controlling means 160.
Claim 7
Dependent Claim
25 words
A variable speed transmission as in claim 5 and wherein: a. said programmed controlling means also controls the actuation of said piston within said cylinder.
Claim 8
Dependent Claim
61 words
A transmission according to claim 2 and wherein: a. said cylinder is mounted on a stationary support and said piston is connected to said carrier by means of a piston rod, b. a stop rod mounted in fixed relation to said cylinder, c. and cooperating parts on said piston rod and said stop rod for limiting the travel of said piston.
Claim 9
Dependent Claim
52 words
A transmission according to claim 7 and wherein: a. said stop rod has an outwardly extending part engageable by said piston rod to stop movement of said piston and, b. said part of said stop rod being adjustable lengthwise of said stop rod to determine the length of travel of said piston.
Claim 10
Dependent Claim
23 words
A transmission according to claim 8 and wherein: a. said cooperating parts are adjustable to vary the extent of travel of said piston.
Claim 11
Dependent Claim
53 words
A transmission according to claim 8 and wherein: a. said piston rod has a laterally extending part and, b. said stop rod has upper and lower outwardly extending parts extending into the path of movement of said laterally extending part of said piston to limit the movement of said piston in two directions.
Claim 12
Dependent Claim
23 words
A transmission according to claim 10 and wherein: a. said upper and lower outwardly extending parts are longitudinally adjustable on said stop rod.
Claim 13
Dependent Claim
42 words
A transmission as in claim 10 wherein: a. said stop rod includes a plurality of indexing notches thereon, b. said upper and lower outwardly extending parts including portions engageable in said notches, and c. spring biasing said engageable portions into said notches.
Claim 14
Dependent Claim
23 words
A transmission as in claim 12 and wherein: a. said upper and lower outwardly extending parts are longitudinally adjustable on said stop rod.
Claim 15
Dependent Claim
40 words
A transmission according to claim 7 and wherein: a. said piston rod has a sliding connection with said stop rod, and b. cooperating parts on said piston rod and stop rod for limiting the extent of movement of said piston.
References Cited (Backward Citations)
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |