Title: Tennis rackets and similar implements with vibration damper

Abstract: A damping mechanism for implements such as tennis rackets, baseball bats and the like, comprising an elongated vibratable member formed of an elastomeric, energy-absorbing material. One of the ends of the vibratable member is attached rigidly to the implement at a point near an anti-node, with the longitudinal axis of the member concentric with or generally parallel to the longitudinal axis of the implement. The dimensions of the member are adjusted such that the natural frequency of vibration of the member corresponds generally to the vibration induced in the implement in use as a result of striking a game ball or the like.

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Inventors: Lacoste, Francois Rene (Hauts de Seine, FR)

Application Number: 378713
Filing Date: 1973-07-12
Publication_date: 1976-03-02
Assignee: Patentex S.A. (Fribourg, CH)
Primary Class(es): 473/520
Other Classes:
US Patent Ref:

1526734	Feb, 1925	Andrews et al.	273/73.
1587918	Jun, 1926	Morrison	273/73.
1934597	Nov, 1933	Foppl	64/1.
2023131	Dec, 1935	Gibson	273/72.
2396847	Mar, 1946	Hathaway	188/1.
2534963	Dec, 1950	Fowler	188/1.
2544450	Mar, 1951	Enos	273/72.
2586043	Feb, 1952	Hodgson et al.	188/1.
2599539	Jun, 1952	Boyd et al.	188/1.
2631690	Mar, 1953	Dunham	188/1.
3075406	Jan, 1963	Butler et al.	64/1.
3138380	Jun, 1964	Satchell et al.	273/82.
3210765	Oct, 1965	Jones	174/42.
3314503	Apr, 1967	Neubert	248/358.
3388772	Jun, 1968	Marsh et al.	188/1.
3401911	Sep, 1968	Lazan	188/1.
3412725	Nov, 1968	Hoyt	124/30.
3430902	Mar, 1969	Lohr	248/358.
3478160	Nov, 1969	Reed	248/358.
3479030	Nov, 1969	Merola	273/72.
3487888	Jan, 1970	Adams et al.	248/358.
3524441	Aug, 1970	Jeffery	124/24.
3525322	Aug, 1970	Lee	124/24.
3612526	Oct, 1971	Brull	273/73.
3633910	Jan, 1972	Spenle	273/73.
3729196	Apr, 1973	Heald	273/72.
3757761	Sep, 1973	Izuta	124/23.

Other Refs: 2,106,800310,5661,526,9061,181,560498,430

Sep, 1971	DT
May, 1929	UK
Apr, 1968	FR
Nov, 1964	DT
Jan, 1939	UK

Primary Examiner: Apley, Richard J.
Assistant Examiner:
Attorney: Merriam, Marshall, Shapiro & Klose