USO0RE37170E
(19) United States (12) Reissued Patent Kurosu (54)
US RE37,170 E
(10) Patent Number:
(45) Date of Reissued Patent:
*May 8, 2001
DISC LOADING MECHANISM IN A DISC PLAYER FOR POSITIONING A DISC AND
4,425,591 * 4,670,866 *
AN OPTICAL PICKUP WHILE REDUCING
4,698,704 * 10/1987 KoiZumi et al.
MECHANICAL SHOCKS TO THE DISC
4,755,978 *
7/1988 Takizawa et al. ..
TRAY
4,893,295 *
1/1990 Matsuura .......................... .. 369/75.2 3/1993 Van Heusden et al. ............. .. 369/37
5,197,056
1/1984 Ito et al. .............................. .. 360/88 6/1987 Hasegawa et al. .................. .. 369/36
360/74.1 ..... .. 369/37
(75) Inventor: Tadao Kurosu, Saitama (JP) FOREIGN PATENT DOCUMENTS
(73) Assignee: Sony Corporation, Tokyo (JP) (*)
Notice:
This patent issued on a continued pros
ecution application ?led under 37 CFR 1.53(d), and is subject to the tWenty year patent term provisions of 35 U.S.C.
63-266684 02252167 02276057
11/1988 (JP). 10/1990 (JP). 11/1990 (JP).
* cited by examiner
154(a)(2). (21) Appl. No.: 08/667,484
Primary Examiner—William KlimoWicZ (74) Attorney, Agent, or Firm—Ronald P. Kananen; Rader,
(22) Filed:
Fishman & Grauer
Jun. 24, 1996 Related US. Patent Documents
(57)
ABSTRACT
Reissue of:
(64) Patent No.: Issued: Appl. No.:
5,123,005 Jun. 16, 1992
A loading mechanism of a disc tray onto Which recording medium discs such as compact discs, laser discs, or the like
07/629,682
Filed:
Dec. 18, 1990
are set and Which moves betWeen a pull-out position at Which the disc tray Was pulled out of an outer casing and a
US. Applications: 63
Continuation of a PP lication No. 08/261,090, ?led on Jun.
16, 1994, now abandoned.
(30)
Foreign Application Priority Data
Dec. 28, 1989
(JP) ................................................. .. 1-343299
(51) (52)
Int. Cl.7 .......................... .. G11B 17/26; G11B 17/04 US. Cl. ................ .. 369/77.1; 360/99.02; 360/99.07;
(58)
Field of Search ................................ .. 369/75.2, 77.1,
369/37; 369/75.2
369/77.2, 37; 360/99.02, 99.03, 99.06, 99.07, 98.01, 98.06, 194
(56)
References Cited
pull-in position at Which the disc tray Was pulled into the outer casing. The engagement betWeen the loading gear and the rack of the disc tray is released just before the pull-in operation of the disc tray is completed and, at the same time, a cam portion formed on the loading gear comes into
engagement With the abutted portion of the disc tray, thereby alloWing the disc tray to be subsequently pulled in by the pressing motion of the cam portion to the abutted portion. Thus, the pull-in speed of the disc tray can be reduced just before the completion of the pull-in operation of the disc tray and a shock Which occurs upon completion of the pull-in operation of the disc tray can be reduced. Due to this, a
shock sound by the collision of the disc tray and the member on the casing side for restricting the pull-in position of the disc tray and the shock to the disc player by such a collision
are eliminated, thereby raising the quality of the disc player.
U.S. PATENT DOCUMENTS 4,184,185
*
1/1980
Yakame .............................. .. 360/137
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