After an extensive search I was finally able to locate one major
manufacturer of the capsules used in the Japanese Capsule Hotels.
The name of the company is KOTOBUKI CORPORATION.
?KOTOBUKI's sleeping compartments have been used at capsule hotels
across the nation. Use of sleeping compartments, which require less
space, allows hotels to expand other spaces for saunas, massage rooms,
and large spas, etc.?
?KOTOBUKI not only offers sleeping compartments but also assists
implementation planning through its abundant experience and
?Cities never sleep. We help improve accommodation facilities for
those who take an active role in various service industries and those
who are called out regardless of day and night in case of an
emergency. We also offer planning assistance to an attractive capsule
hotel through our abundant experience and achievements.?
Models, Descriptions and Dimensions
"Facilities of a budget hotel room, such as a writing desk and a sofa,
can be installed in an attached space efficiently.
A spacious and well-designed advanced-type sleeping compartment called
(Interior dimensions): W2073xD1116xH1055
"The No. 91 System, which aims at offering comfort as good as a
independent-type system in pursuit of a good night's sleep, is an
achievement of KOTOBUKI's pioneer spirit. It is massive and
comfortable to sleep in."
Interior dimensions: W2047xD1065xH1063
"The No. 90 System makes most use of a small space while maintaining
comfort for a good night sleep. With the layout using space
efficiently, this system is KOTOBUKI's masterpiece."
Interior dimensions: W1065xD2047xH1063
"This is a sleeping compartment taking into consideration the ease of
getting in and out. In this well-equipped compartment, users can enjoy
pleasant and comfortable rest even if they have only a short time."
Interior dimensions W2130~D1060~H1055
Detailed image of a capsule
KOTOBUKI CORPORATION HEADQUARTERS
1-2-1 KANDA SURUGADAI CHIYODA-KU
TOKYO 101-0062 JAPAN
You might also be interested in the following patent for Modular Sleeping Units
United States Patent 4594817
Inventors: McLaren, Charles L.; Hirsekorn, Franklin D.;
Application Number: 413563
Filing Date: 1982-08-31
Publication Date: 1986-06-17
?Sleeping modules are disclosed which are of elongated box shape
construction with open ends for access. The are about length and width
of a single bed and of sufficient height for an occupant to sit
upright. The modules assembled in stacks or columns of two or more
modules supported one above the other in parallel relation in a
supporting framework and arranged in rows together with bathrooms and
other accommodations. The sleeping modules are assembled into portable
building units which may be used for portable sleeping accommodations
at parks, sporting events, and other locations where temporary or
permanent inexpensive sleeping accommodations are desired.
Additionally, the sleeping modules may be assembled into larger
building units or other suitable accommodations to provide facilities
for dormitories, barracks, or places of confinement such as
correctional institutions. Portable buildings containing sleeping
modules are especially useful to provide sleeping accommodations in
places where access is limited and conventional sleeping
accommodations are difficult to construct. Buildings containing the
sleeping modules are especially useful for sleeping accommodations on
off shore oil rigs and for sleeping accommodations along highways,
e.g. truck stops and the like. ?
United States Patent 4,594,817
McLaren , et al. June 17, 1986
See images and detailed information at the United States Patent and
If the above link does not work, search for Patent 4594817 here:
accommodation module unit container hotel capsule
I hope this is helpful!