US4501257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orienting attachment to ball throwing machine
Assignee: SUMSKOI FILIAL KHARKOVSKOGO POLITEKHNICHESKOGO INSTITUTA USSR SUMY ULITSA RIMSKOGO-KORSOKOVA 2
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Filing: 1982-07-14
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Granted: 1985-02-26
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Expires: 2002-07-14
Abstract
Abstract An attachment to a ball throwing machine includes a stationary sleeve secured to the ball throwing machine barrel, a movable sleeve mounted for rotation onto the stationary sleeve, and a rotatable deflecting frame of two T-shaped levers with rollers, mounted on said movable sleeve. Rotation of the frame is restricted by stops, and at least one retainer is provided to lock the frame in one of the extreme positions, the retainer having the form of a flat spring connected to one of said levers and controlled by a cable through a helical compression spring.
Inventors
- 👤 Boris G. Kholin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:07
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
191 words
An orienting attachment for a ball throwing machine, comprising: (a) a coupling unit for securing the attachment to said ball throwing machine, including (i) a stationary sleeve rigidly attached to the barrel of a ball throwing machine; (ii) a rotatable sleeve coaxially mounted on said stationary sleeve for rotation about the axis of said stationary sleeve; (b) a ball deflector mounted on said movable sleeve and which may be rotated between two extreme positions, including (i) two rollers and (ii) a rotatable frame comprising two parallel T-shaped levers, each having a thrust leg and a head hingedly connected by said legs with said movable sleeve, and transverse spindles interconnecting said heads of said T-shaped levers and carrying said rollers mounted thereon so that they may be freely rotated, (c) stops secured to said movable sleeve for abutting against and restricting the rotation of said rotatable frame when said frame is set to one of two extreme positions, and (d) at least one retainer on said movable sleeve for holding said frame in one of the extreme positions, connected with said movable sleeve and with the leg of one of said levers.
Claim 2
Dependent Claim
191 words
An orienting attachment for a ball throwing machine, comprising: (a) a coupling unit for securing the attachment to said ball throwing machine, including (i) a stationary sleeve rigidly attached to the barrel of a ball throwing machine; (ii) a rotatable sleeve coaxially mounted on said stationary sleeve for rotation about the axis of said stationary sleeve; (b) a ball deflector mounted on said movable sleeve and which may be rotated between two extreme positions, including (i) two rollers and (ii) a rotatable frame comprising two parallel T-shaped levers, each having a thrust leg and a head hingedly connected by said legs with said movable sleeve, and transverse spindles interconnecting said heads of said T-shaped levers and carrying said rollers mounted thereon so that they may be freely rotated, (c) stops secured to said movable sleeve for abutting against and restricting the rotation of said rotatable frame when said frame is set to one of two extreme positions, and (d) at least one retainer on said movable sleeve for holding said frame in one of the extreme positions, connected with said movable sleeve and with the leg of one of said levers.
Claim 3
Dependent Claim
84 words
An attachment as claimed in claim 1, wherein said retainer is essentially a flat spring one end of which is connected to said T-shaped lever, a cable connected to the other end of said spring and serving to control the latter, a bracket secured to said movable sleeve and having a hole for passage of said cable, and also a helical compression spring fitted onto said cable and thrusting with one end against said bracket, and with the other end against said flat spring.
Claim 4
Dependent Claim
21 words
An attachment as claimed in claim 2, wherein said stops of said frame are made adjustable for varying the spacing therebetween.
Claim 5
Dependent Claim
22 words
An attachment as claimed in claim 1, wherein at least the surface layer of said rollers is made of an antifriction material.
Claim 6
Dependent Claim
21 words
An attachment as claimed in claim 1, wherein said stops of said frame are made adjustable for varying the spacing therebetween.
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) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |