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Patent US4473227A successfully refreshed from Google Patents.
US4473227A
Expired / Lapsed
US
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Baseball pitchers' practice device
Assignee: Individual
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Filing: 1983-10-28
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Granted: 1984-09-25
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Expires: 2003-10-28
Abstract
Abstract A baseball pitchers' practice device is provided and consists of a vertical support frame set up temporarily at the front edge of home plate. The pitcher attempts to throw the baseball from his mound position to the catcher behind home plate through the device which outlines the strike zone area. The support frame is comprised of a pair of spaced apart, vertically extending stanchions. Each stanchion is supported by base members, the base members being connected by a horizontally extending alignment rod. The stanchions are attached to the base members by spring members such that if the stanchions are hit by a pitched ball the stanchions will be deflected. The strike zone area is defined by a plurality of strips of tape and is releasably attached to the stanchions by loop-hook fabric fasteners such that the tape will be disengaged from the stanchions if hit by a pitched ball.
Inventors
- 👤 Louis Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:17
CPC Classifications
A; A63; A63B; A63B63/00; Y; Y10; Y10S; Y10S273/00; Y10S273/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
220 words
A baseball pitchers' practice device which comprises a vertical support frame having a strike zone area outlined and suspended therefrom, said support frame is set up temporarily at the front edge of home plate between batter's boxes whereby a pitcher attempts to throw a baseball from his mound position to a catcher behind home plate through the strike zone area of said device, said vertical support frame comprising: (a) a pair of base members, each said base member having a central aperture and corner apertures to accommodate spikes for holding said base member to the ground; (b) a pair of spring assemblies, each said spring assembly affixed to the central aperture of said base member to allow 180 degree movement if struck; (c) an alignment rod affixed between said base members for positioning and aligning said device in front of home plate; (d) a pair of upright stanchions, each said stanchion having one end affixed to said spring assembly; (e) a strike frame, and (f) coupling means for releasably coupling said strike zone frame to said upright stanchions, whereby the strike zone frame can be automatically released upon its being hit by a pitched baseball, and whereby the stanchions will deflect if hit by a pitched baseball, so as to avoid injury to a catcher during use of said device.
Claim 2
Dependent Claim
220 words
A baseball pitchers' practice device which comprises a vertical support frame having a strike zone area outlined and suspended therefrom, said support frame is set up temporarily at the front edge of home plate between batter's boxes whereby a pitcher attempts to throw a baseball from his mound position to a catcher behind home plate through the strike zone area of said device, said vertical support frame comprising: (a) a pair of base members, each said base member having a central aperture and corner apertures to accommodate spikes for holding said base member to the ground; (b) a pair of spring assemblies, each said spring assembly affixed to the central aperture of said base member to allow 180 degree movement if struck; (c) an alignment rod affixed between said base members for positioning and aligning said device in front of home plate; (d) a pair of upright stanchions, each said stanchion having one end affixed to said spring assembly; (e) a strike frame, and (f) coupling means for releasably coupling said strike zone frame to said upright stanchions, whereby the strike zone frame can be automatically released upon its being hit by a pitched baseball, and whereby the stanchions will deflect if hit by a pitched baseball, so as to avoid injury to a catcher during use of said device.
Claim 3
Dependent Claim
37 words
A baseball pitchers' practise device as recited in claim 1 wherein said alignment rod is comprised of a plurality of sections which are releasably connected by bolt fasteners so that they can easily be disassembled and stored.
Claim 4
Dependent Claim
77 words
A baseball pitchers' practise device as recited in claim 2 wherein each said upright stanchion is comprised of an upper section and a lower section, said upper section having a threaded bottom and said lower section having a threaded top end, the two sections being connected by a threaded union engaging the threaded bottom end of the upper section and the threaded top end of the lower section so that they can easily be disassembled and stored.
Claim 5
Dependent Claim
102 words
A baseball ptichers' practice device as recited in claim 3, wherein said strike zone frame comprises: (a) a rectangular strike zone member approximately 22 inches wide by 40 inches high; (b) two sets of horizontal support arms, one set of support arms being connected between the top of said strike zone member and the upper sections of the upright stanchions while the other set of support arms is connected between the bottom of said strike zone member and the lower sections of the upright stanchions so that the bottom of said strike zone member will be about 2 feet above home plate.
Claim 6
Dependent Claim
37 words
A baseball pitchers' practise device as recited in claim 4 wherein said strike zone member is formed from one inch wide woven nylon tape having a bright color on one side and black color its other side.
Claim 7
Dependent Claim
24 words
A baseball pitchers' practise device as recited in claim 5, wherein said support arms are formed from one inch wide black woven nylon tape.
Claim 8
Dependent Claim
51 words
A baseball pitchers' practise device as recited in claim 6 wherein said coupling means are clips having spring jaws, each said clip adjustably fits each said stanchion with the spring jaws releasably engaging said support arm tape that is easily released if said strike zone frame is struck by a baseball.
Claim 9
Dependent Claim
76 words
A baseball pitchers' practice device as recited in claim 6 wherein said coupling means are loop-hook fabric fasteners, a portion of one said loop-hook fabric fastener is affixed around said stanchions and another portion of said loop-hook fabric fastener is affixed to said support arms, said support arms being wrapped less than 180 degrees around said stanchions so that if said strike zone frame is struck by a baseball said loop-hook fabric fastener will automatically disengage.
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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) | 1987-09-25 | 1988-03-26 | 1988-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-25 | 1992-03-26 | 1992-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-25 | 1996-03-26 | 1996-09-25 | $7700.00 | Window Closed / Lapsed |