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1. 发明授权

US4640344A Self-cleaning, rotary heat exchanger 失效
标题翻译：自清洁，旋转式热交换器
公开(公告)号：US4640344A
公开(公告)日：1987-02-03
申请号：US836064
申请日：1986-03-04
申请人： Milton F. Pravda
发明人： Milton F. Pravda
IPC分类号： F28D15/02 , F28F13/02 , F28G13/00 , F28D5/00
CPC分类号： F28F13/02 , F28D15/0208 , F28D15/0275 , F28G13/00 , F28F2200/005 , Y10S165/921
摘要： A rotary, Perkins tube heat exchanger for processing hot contaminated gas flows emanating from appliances such as laundry driers, grain driers and the like. The case of the heat exchanger is located relative to the rotor so as to lie in the gas flow boundary layer established by the latter. The case is provided with a boundary layer purge port in the hot gas chamber. An airfoil extends inwardly from the case into the gas flow boundary layer. It causes increased local turbulance in the boundary layer gas. It also diverts a predetermined proportion of the boundary layer gas and its burden of contamination products out through the purge port. The boundary layer airflow cleans both the interior of the case and the rotor, even through the rotor is characterized by the presence of a multiplicity of small openings. The device thus is rendered self-cleaning and may be operated for extended periods of time without buildup of contaminants within the heat exchanger case.
摘要翻译：用于处理从诸如洗衣干燥机，谷物干燥器等的电器产生的热污染气体的旋转珀金斯管式热交换器。热交换器的情况相对于转子定位，以便位于由后者建立的气流边界层中。在热气室中设有边界层吹扫口。机翼从壳体向内延伸到气流边界层中。这导致边界层气体中的局部湍流增加。它还通过吹扫口转移预定比例的边界层气体及其污染物的负担。边界层气流清洁壳体和转子的内部，即使通过转子，其特征在于存在多个小开口。因此，该装置被自动清洁并且可以长时间地操作而不会在热交换器壳体内积聚污染物。

2. 发明授权

US4862764A Suspended table 失效
公开(公告)号：US4862764A
公开(公告)日：1989-09-05
申请号：US258651
申请日：1988-10-17
申请人： Andrew A. Gehring
发明人： Andrew A. Gehring
IPC分类号： A47B5/00
CPC分类号： A47B5/00 , A47B2005/003 , Y10T74/18824 , Y10T74/1888 , Y10T74/18976 , Y10T74/19679 , Y10T74/2186
摘要： A table suspended from a room ceiling has a table top that is positionable between a retracted first position against the ceiling and a second position extended from the ceiling toward the floor. Extension and retraction occur through a pivotal arm assembly. The arm assembly is controlled by electric or manual powered drive mechanisms. The drive mechanisms are enclosed in a modular housing that is manufactured to interchangeably accept either the electrical or the manual drive mechanisms. The suspended table includes a table top that is rotatable about a vertical axis.

3. 发明授权

US4815396A Suspended table 失效
标题翻译：挂桌
公开(公告)号：US4815396A
公开(公告)日：1989-03-28
申请号：US91402
申请日：1987-08-31
申请人： Andrew A. Gehring , David Loomans
发明人： Andrew A. Gehring , David Loomans
IPC分类号： A47B5/00
CPC分类号： A47B5/00 , A47B2005/003
摘要： A table suspended from a room ceiling has a table top that is positionable between a retracted first position against the ceiling and a second position extended from the ceiling toward the floor. Extension and retraction occur through a pivotal arm assembly. The arm assembly is controlled by electric or manual powered drive mechanisms. The drive mechanisms are enclosed in a modular housing that is manufactured to interchangeably accept either the electrical or the manual drive mechanisms. The suspended table includes a table top that is rotatable about a vertical axis.
摘要翻译：从房间天花板悬挂的桌子具有台面，该台面位于靠近天花板的缩回的第一位置和从天花板向地板延伸的第二位置之间。通过枢转臂组件发生伸缩。臂组件由电动或手动动力驱动机构控制。驱动机构被封闭在一个模块化的外壳中，制造成可互换地接受电动或手动驱动机构。悬挂的桌子包括可绕垂直轴线旋转的台面。

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