Patent US4681318A successfully refreshed from Google Patents.
US4681318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball hitting practice device
Assignee: GRAND SLAM Inc A CORP OF UT
•
Filing: 1986-06-17
•
Granted: 1987-07-21
•
Expires: 2006-06-17
Abstract
Abstract A new type of baseball and softball hitting practice device which is easily adjusted for use in training young ball players comprising a planar base to which is attached a vertical pedestal, the pedestal having a first vertical resilient member having a ball fixedly attached to the terminal end and having the other end adapted to fitting into the end of a second resilient tubular member in telescopic manner, the bottom end of the second tubular member being fixedly attached to a coil spring which in turn is attached to a pivoting element which permits the pedestal to be inclined to the side, back or front depending on the desired position of the ball and then locked in that position.
Inventors
- 👤 William C. Lay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:17
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/0073; A63B69/0091
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
179 words
An adjustable ball hitting practice device comprising in combination; a. a planar base adapted to being secured to a solid surface, and b. a vertical pedestal fixedly attached to the top surface of said bse, said pedestal comprising a first vertically extending resilient member having a ball fixedly attached to one end thereof and having its other end fitting into the upper end of a second vertically extending resilient tubular member in telescopic manner so as to permit said first resilient member to be adjusted up and down, locking means to secure said first resilient member in a desired position, an elongated coil spring having one of its ends fixedly attached to the bottom end of said second resilient member permiting the entire vertical pedestal to bend when the ball is hit, pivoting means fixedly attached to the other end of the coil spring and to the surface of the planar base, said pivoting means permitting said vertical pedestal to be inclined to the side, front or back and then fixedly located in a desired position by locking means.
Claim 2
Dependent Claim
179 words
An adjustable ball hitting practice device comprising in combination; a. a planar base adapted to being secured to a solid surface, and b. a vertical pedestal fixedly attached to the top surface of said bse, said pedestal comprising a first vertically extending resilient member having a ball fixedly attached to one end thereof and having its other end fitting into the upper end of a second vertically extending resilient tubular member in telescopic manner so as to permit said first resilient member to be adjusted up and down, locking means to secure said first resilient member in a desired position, an elongated coil spring having one of its ends fixedly attached to the bottom end of said second resilient member permiting the entire vertical pedestal to bend when the ball is hit, pivoting means fixedly attached to the other end of the coil spring and to the surface of the planar base, said pivoting means permitting said vertical pedestal to be inclined to the side, front or back and then fixedly located in a desired position by locking means.
Claim 3
Dependent Claim
32 words
An adjustable ball hitting practice device as in claim 1 wherein the planar base possesses several holes to permitting stakes to be placed therein to secure the plate to a solid surface.
Claim 4
Dependent Claim
22 words
An adjustable ball hitting practice device as in claim 1 wherein the first and second resilient members are prepared from fiber glass.
Claim 5
Dependent Claim
20 words
An adjustable ball hitting practice device as in claim 1 wherein the base and coil spring are prepared from metal.
Claim 6
Dependent Claim
24 words
An adjustable ball hitting practice device as in claim 1 wherein the ball attached to the first resilient member is a plastic molded baseball.
Claim 7
Dependent Claim
30 words
An adjustable ball hitting practice device as in claim 1 wherein the ball is attached to an elongated rubber member which in turn is attached to the first resilient member.
Claim 8
Dependent Claim
16 words
An adjustable ball hitting practice device as in claim 1 wherein the ball is a softball.
Claim 9
Dependent Claim
19 words
An adjustable ball hitting practice device as in claim wherein the base plate is prepared from hard rubber sheet.
References Cited (Backward Citations)
US925342A
Cited
US1890696A
Cited
US2009040A
Cited
US2082272A
Cited
US3183000A
Cited
US3883138A
Cited
US4227691A
Cited
US4383686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |