Patent US3877698A successfully refreshed from Google Patents.
US3877698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baseball bat with replaceable ball-striking portion
Assignee: Individual
•
Filing: 1973-11-28
•
Granted: 1975-04-15
•
Expires: 1993-11-28
Abstract
Abstract A baseball bat has a handle with a stem joined to its front end and extending forward from it, the stem extending into a longitudinal bore in a removable barrel that has an outer ballstriking surface. The diameter of the bore is greater than the diameter of the stem, which has annular grooves spaced lengthwise of it and containing elastic rings compressed between the stem and the encircling barrel to hold the barrel in place and space it from the stem.
Inventors
- 👤 Michael A Volpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:41
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/52; A63B60/00; A63B60/06; A63B60/10; A63B2102/00; A63B2102/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
121 words
A composite baseball bat with a replaceable ball-striking portion, comprising a handle having front and rear ends, a stem joined to the front end of the handle and extending forward therefrom, a removable barrel provided with a longitudinal bore receiving substantially all of said stem, the diameter of said bore being greater than the diameter of the stem to space the barrel from the stem, the barrel having an outer ball-striking surface, said stem being provided with a plurality of annular grooves spaced lengthwise thereof, and elastic rings in at least most of the grooves and projecting therefrom, said rings being compressed between the stem and the encircling barrel to hold the barrel in place and space it from said stem.
Claim 2
Dependent Claim
121 words
A composite baseball bat with a replaceable ball-striking portion, comprising a handle having front and rear ends, a stem joined to the front end of the handle and extending forward therefrom, a removable barrel provided with a longitudinal bore receiving substantially all of said stem, the diameter of said bore being greater than the diameter of the stem to space the barrel from the stem, the barrel having an outer ball-striking surface, said stem being provided with a plurality of annular grooves spaced lengthwise thereof, and elastic rings in at least most of the grooves and projecting therefrom, said rings being compressed between the stem and the encircling barrel to hold the barrel in place and space it from said stem.
Claim 3
Dependent Claim
35 words
A composite baseball bat according to claim 1, in which at least one of said grooves contains a metal weight ring instead of an elastic ring, said weight ring being spaced from the encircling barrel.
Claim 4
Dependent Claim
51 words
A composite baseball bat according to claim 1, in which said elastic rings are in most of said grooves, including the two grooves nearest the front end of the stem, and a metal weight ring is disposed in a groove behind said two grooves and is spaced from the encircling barrel.
Claim 5
Dependent Claim
49 words
A composite baseball bat according to claim 1, in which the front end of the handle has a forwardly facing radial shoulder encirclinG the rear end of the stem, and a resilient spacing ring encircles the stem in engagement with said shoulder and the rear end of the barrel.
Claim 6
Dependent Claim
58 words
A composite baseball bat according to claim 1, in which the portions of said elastic rings that project from said grooves before the stem is inserted in the barrel bore have rearwardly inclined front surfaces, and the rear end of the barrel has an inwardly tapered end wall for engaging said inclined surfaces as the bat is assembled.
Claim 7
Dependent Claim
31 words
A composite baseball bat according to claim 1, including a metal weight between the front ends of said stem and bore, and compressed resilient means spacing said weight from the barrel.
Claim 8
Dependent Claim
24 words
A composite baseball bat according to claim 1, in which said barrel is wood, and said handle and stem are made of another material.
Claim 9
Dependent Claim
35 words
A composite baseball bat according to claim 1, in which said barrel is a metal tube, and a rubber plug secured to the front end of said stem closes the front end of said tube.
References Cited (Backward Citations)
US275627A
Cited
US546540A
Cited
US2379006A
Cited
US2607956A
Cited
US3116926A
Cited
US3246894A
Cited
US3392976A
Cited
US3578801A
Cited
US3652094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |